ASTROSAT CZTI

Data Quality Report

Orbit 20220918_A11_106T02_9000005344_level2

Creation date: 2022-09-28T23:14:36.040101
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_106T02_9000005344cztM0_level2_bc.evt modeM0/AS1A11_106T02_9000005344cztM0_level2_quad_clean.evt
Size (bytes)15,537,749,7603,561,085,440
Size14.5 GB 3.3 GB
Events in quadrant A132,982,50321,133,565
Events in quadrant B78,327,97522,898,477
Events in quadrant C74,316,66523,307,040
Events in quadrant D165,985,60021,399,467

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010280
B010280
C010280
D010290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056980
B056980
C056980
D056980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09163720
B06410730
C05922530
D09508900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2790714241615.199000%
B27907152261.872642%
C27907016760.600566%
D2790723209311.499900%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 391556 279005 1962 1962 0.50% 0.70%
B 391556 279054 503 503 0.13% 0.18%
C 391556 279059 351 351 0.09% 0.13%
D 391556 279044 10152 10152 2.59% 3.64%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 222 62378638 21423.09 13149 12968 2911.1
A 10 83 13204317 4531.33 13149 12968 2911.1
A 9 143 2706917 925.39 13149 12968 2911.1
B 5 255 5434784 1947.27 14121 13827 2783.9
B 5 172 3733885 1336.29 14121 13827 2783.9
B 4 81 3059507 1094.04 14121 13827 2783.9
C 15 214 11366440 3519.27 13994 13920 3225.8
C 0 10 3482584 1075.28 13994 13920 3225.8
C 0 207 1599646 491.57 13994 13920 3225.8
D 12 227 32783893 10126.81 13451 13033 3236.0
D 2 249 20409393 6302.86 13451 13033 3236.0
D 12 235 19161138 5917.12 13451 13033 3236.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter