ASTROSAT CZTI

Data Quality Report

Orbit 36382

Creation date: 2022-06-21T08:04:28.856958
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_097T24_9000005196_36382cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36382cztM0_level2_quad_clean.evt
Size (bytes)586,180,80069,534,720
Size559.0 MB 66.3 MB
Events in quadrant A5,152,298413,500
Events in quadrant B3,907,049434,869
Events in quadrant C3,199,200431,770
Events in quadrant D5,077,031394,854

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192913
B0156842
C0132382
D0192992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61626009.737098%
B61622283.700097%
C6162410.665368%
D61624948.016878%

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 8905 6164 514 514 5.77% 8.34%
B 8905 6164 204 204 2.29% 3.31%
C 8905 6164 31 31 0.35% 0.50%
D 8905 6164 504 504 5.66% 8.18%

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 15 223 2285501 16736.42 679 667 136.5
A 10 83 188175 1373.5 679 667 136.5
A 9 143 29289 209.66 679 667 136.5
B 5 172 685165 5081.42 692 674 134.7
B 5 255 241109 1784.9 692 674 134.7
B 4 171 133255 984.23 692 674 134.7
C 15 214 260091 1623.65 683 686 159.8
C 0 10 130061 809.77 683 686 159.8
C 0 207 80514 499.65 683 686 159.8
D 12 6 861530 5330.4 659 641 161.5
D 13 249 712349 4406.71 659 641 161.5
D 2 249 385774 2384.64 659 641 161.5

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