ASTROSAT CZTI

Data Quality Report

Orbit 31485

Creation date: 2024-06-27T20:29:07.248317
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/AS1T04_028T01_9000004584_31485cztM0_level2.evt modeM0/AS1T04_028T01_9000004584_31485cztM0_level2_quad_clean.evt
Size (bytes)354,107,52035,818,560
Size337.7 MB 34.2 MB
Events in quadrant A1,577,494226,083
Events in quadrant B4,788,342222,308
Events in quadrant C1,743,578215,640
Events in quadrant D2,404,064200,255

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0662
B0662
C0673
D0673

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06621199
B016659352
C07170293
D09705579

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0142
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3102130.419084%
B3080132943.149351%
C3082953.082414%
D30811856.004544%

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 4537 3122 3 3 0.07% 0.10%
B 4534 3112 1246 1246 27.48% 40.04%
C 4537 3110 55 55 1.21% 1.77%
D 4540 3103 167 167 3.68% 5.38%

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 0 13 15224 180.8 403 395 82.0
A 6 10 7029 80.89 403 395 82.0
A 13 254 5346 60.37 403 395 82.0
B 12 1 3006897 53100.92 289 283 56.6
B 6 159 605942 10696.77 289 283 56.6
B 4 80 16622 288.57 289 283 56.6
C 0 10 188927 2109.77 377 379 89.4
C 14 238 61545 684.42 377 379 89.4
C 3 233 11951 129.49 377 379 89.4
D 12 218 474952 5209.55 378 369 91.1
D 8 195 454358 4983.49 378 369 91.1
D 2 234 11383 120.9 378 369 91.1

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