ASTROSAT CZTI

Data Quality Report

Orbit 53891

Creation date: 2025-09-14T05:32:14.952470
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/AS1A14_057T04_9000006508_53891cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53891cztM0_level2_quad_clean.evt
Size (bytes)786,945,60083,001,600
Size750.5 MB 79.2 MB
Events in quadrant A6,018,184640,943
Events in quadrant B3,400,386689,966
Events in quadrant C7,033,289510,938
Events in quadrant D12,187,299228,093

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223542
B0144302
C0253242
D0404905

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63441933.042245%
B6344871.371375%
C6344132920.948928%
D6343401363.266593%

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 7584 6345 162 162 2.14% 2.55%
B 7584 6345 55 55 0.73% 0.87%
C 7584 6345 978 978 12.90% 15.41%
D 7582 6343 3378 3378 44.55% 53.26%

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 12 115 3043271 17605.97 699 684 172.8
A 4 249 116995 673.04 699 684 172.8
A 15 174 62985 360.51 699 684 172.8
B 10 245 216290 1431.3 700 675 150.6
B 5 185 156463 1034.16 700 675 150.6
B 0 213 43521 284.42 700 675 150.6
C 15 224 3694643 21754.59 616 610 169.8
C 4 5 555392 3267.18 616 610 169.8
C 13 3 125013 732.62 616 610 169.8
D 8 176 8473168 76819.08 381 364 110.3
D 7 70 1502038 13615.0 381 364 110.3
D 2 172 239221 2165.61 381 364 110.3

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