ASTROSAT CZTI

Data Quality Report

Orbit 52914

Creation date: 2025-07-17T10:22:20.790289
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/AS1C09_011T06_9000006484_52914cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52914cztM0_level2_quad_clean.evt
Size (bytes)1,098,789,12070,462,080
Size1.0 GB 67.2 MB
Events in quadrant A16,451,513128,270
Events in quadrant B3,640,792643,206
Events in quadrant C5,361,993553,291
Events in quadrant D14,722,484353,557

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0531890
B0155130
C0205040
D0481240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64216421100.000000%
B64511892.929778%
C64465999.292585%
D6429479374.552808%

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 7405 6437 5974 5974 80.68% 92.81%
B 7434 6468 105 105 1.41% 1.62%
C 7449 6466 542 542 7.28% 8.38%
D 7418 6446 4683 4683 63.13% 72.65%

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 9 191 15643324 383894.33 154 150 40.7
A 12 17 59374 1453.4 154 150 40.7
A 5 241 28070 685.18 154 150 40.7
B 1 255 618920 4440.32 655 631 139.2
B 0 213 129732 927.15 655 631 139.2
B 0 182 106524 760.48 655 631 139.2
C 7 80 1839461 10803.67 616 610 170.2
C 13 3 384268 2254.08 616 610 170.2
C 12 254 149274 873.44 616 610 170.2
D 15 78 9766315 81444.78 413 394 119.9
D 8 176 1872205 15610.33 413 394 119.9
D 8 48 900330 7505.19 413 394 119.9

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