ASTROSAT CZTI

Data Quality Report

Orbit 20220802_C07_015T03_9000005260_level2

Creation date: 2022-08-04T17:50:09.285889
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/AS1C07_015T03_9000005260cztM0_level2_bc.evt modeM0/AS1C07_015T03_9000005260cztM0_level2_quad_clean.evt
Size (bytes)330,382,080122,529,600
Size315.1 MB 116.9 MB
Events in quadrant A1,921,267805,887
Events in quadrant B2,356,941818,781
Events in quadrant C2,919,428787,876
Events in quadrant D2,267,985754,382

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165510
B0186800
C0196910
D0178610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7823190.242874%
B78232152.748306%
C78232002.556564%
D7823791.009843%

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 9616 7824 0 0 0.00% 0.00%
B 9615 7822 11 11 0.11% 0.14%
C 9615 7822 92 92 0.96% 1.18%
D 9615 7822 20 20 0.21% 0.26%

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 10 83 249143 2580.8 427 420 96.4
A 9 143 17493 177.15 427 420 96.4
A 13 254 7748 76.04 427 420 96.4
B 5 172 541634 6282.15 429 421 86.2
B 4 81 124096 1435.56 429 421 86.2
B 0 213 28164 322.03 429 421 86.2
C 1 23 754057 7893.98 415 413 95.5
C 15 214 314993 3295.04 415 413 95.5
C 10 20 104075 1085.8 415 413 95.5
D 12 235 157081 1641.54 415 404 95.4
D 12 17 117783 1229.81 415 404 95.4
D 2 250 116088 1212.05 415 404 95.4

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