ASTROSAT CZTI

Data Quality Report

Orbit 36370

Creation date: 2022-06-20T13:02:16.858488
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_36370cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36370cztM0_level2_quad_clean.evt
Size (bytes)873,875,520122,109,120
Size833.4 MB 116.5 MB
Events in quadrant A5,589,938761,169
Events in quadrant B6,360,957761,031
Events in quadrant C5,272,434746,557
Events in quadrant D8,515,094684,313

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234894
B0260633
C0223153
D0327263

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10744510.474684%
B107443092.876024%
C10744300.279226%
D107448537.939315%

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 13518 10744 38 38 0.28% 0.35%
B 13518 10745 205 205 1.52% 1.91%
C 13519 10746 29 29 0.21% 0.27%
D 13519 10746 825 825 6.10% 7.68%

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 12 189 344808 1398.39 1224 1201 245.7
A 10 83 312177 1265.59 1224 1201 245.7
A 9 143 175789 710.53 1224 1201 245.7
B 5 172 1047012 4575.66 1198 1167 228.6
B 15 85 186866 812.45 1198 1167 228.6
B 0 182 171868 746.83 1198 1167 228.6
C 15 214 458341 1659.78 1178 1188 275.4
C 0 10 190593 687.67 1178 1188 275.4
C 0 207 27241 94.59 1178 1188 275.4
D 12 6 1290280 4583.99 1147 1117 281.2
D 2 249 949737 3373.09 1147 1117 281.2
D 13 249 833929 2961.3 1147 1117 281.2

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