ASTROSAT CZTI

Data Quality Report

Orbit 21358

Creation date: 2024-06-27T18:26:44.491280
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/AS1A05_041T01_9000003150_21358cztM0_level2.evt modeM0/AS1A05_041T01_9000003150_21358cztM0_level2_quad_clean.evt
Size (bytes)1,312,810,560239,921,280
Size1.2 GB 228.8 MB
Events in quadrant A8,991,5201,518,470
Events in quadrant B9,094,3501,532,511
Events in quadrant C9,286,5541,480,393
Events in quadrant D11,123,7721,448,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039410
B039414
C039416
D039416

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0398761182
B0404621207
C0410091260
D0473851474

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0201
D0201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186901630.872124%
B186842811.503961%
C186703521.885378%
D186315292.839354%

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 21288 19041 0 0 0.00% 0.00%
B 21288 19030 30 30 0.14% 0.16%
C 21289 19036 32 32 0.15% 0.17%
D 21289 19003 367 367 1.72% 1.93%

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 5 168 213079 466.63 2257 2207 451.9
A 11 47 59996 127.88 2257 2207 451.9
A 15 174 29776 61.01 2257 2207 451.9
B 0 230 130754 298.56 2241 2183 430.6
B 3 64 117694 268.23 2241 2183 430.6
B 0 197 58447 130.65 2241 2183 430.6
C 3 233 497268 976.79 2159 2172 506.9
C 14 238 334629 655.91 2159 2172 506.9
C 10 91 39829 74.29 2159 2172 506.9
D 12 235 1787127 3408.55 2169 2108 523.7
D 1 52 808446 1539.73 2169 2108 523.7
D 15 35 164914 310.88 2169 2108 523.7

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