ASTROSAT CZTI

Data Quality Report

Orbit 41961

Creation date: 2024-06-27T22:35:09.335512
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/AS1A12_025T16_9000005724_41961cztM0_level2.fits modeM0/AS1A12_025T16_9000005724_41961cztM0_level2_quad_clean.evt
Size (bytes)667,687,680171,446,400
Size636.8 MB 163.5 MB
Events in quadrant A5,806,2731,157,456
Events in quadrant B5,242,8491,177,558
Events in quadrant C4,954,4311,128,237
Events in quadrant D7,874,306979,525

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238003
B0231273
C0217683
D0310393

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10800450.416667%
B10800950.879630%
C1080040.037037%
D108007657.083333%

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 13486 10802 23 23 0.17% 0.21%
B 13486 10802 47 47 0.35% 0.44%
C 13486 10802 0 0 0.00% 0.00%
D 13486 10802 714 714 5.29% 6.61%

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 1055659 4405.88 1172 1147 239.3
A 15 223 113330 468.71 1172 1147 239.3
A 2 79 64160 263.28 1172 1147 239.3
B 5 255 326207 1444.82 1166 1135 225.0
B 0 190 116637 513.36 1166 1135 225.0
B 15 85 62823 274.18 1166 1135 225.0
C 15 214 465498 1731.11 1144 1151 268.2
C 15 111 23939 84.95 1144 1151 268.2
C 13 61 7562 23.9 1144 1151 268.2
D 13 249 2184568 8029.44 1108 1078 271.9
D 2 120 385739 1414.53 1108 1078 271.9
D 5 222 242062 886.18 1108 1078 271.9

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