ASTROSAT CZTI

Data Quality Report

Orbit 54141

Creation date: 2025-10-01T01:58:49.871997
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_012T01_9000006512_54141cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54141cztM0_level2_quad_clean.evt
Size (bytes)491,610,24093,260,160
Size468.8 MB 88.9 MB
Events in quadrant A3,401,312620,703
Events in quadrant B4,072,679634,452
Events in quadrant C4,120,939586,413
Events in quadrant D6,093,117524,230

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148672
B0169232
C0170342
D0227322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65641191.812919%
B65644096.230957%
C65642003.046923%
D65655618.545316%

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 7319 6565 72 72 0.98% 1.10%
B 7319 6564 194 194 2.65% 2.96%
C 7319 6564 166 166 2.27% 2.53%
D 7320 6566 502 502 6.86% 7.65%

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 7 158 399311 2336.59 687 670 170.6
A 3 14 112504 655.5 687 670 170.6
A 4 3 56268 325.88 687 670 170.6
B 5 236 827641 5915.69 656 632 139.8
B 0 213 143255 1020.2 656 632 139.8
B 5 185 102485 728.57 656 632 139.8
C 9 38 799345 4370.09 665 659 182.8
C 13 3 185180 1009.63 665 659 182.8
C 14 246 115655 629.21 665 659 182.8
D 8 176 1748363 9620.86 647 619 181.7
D 2 62 567589 3121.02 647 619 181.7
D 7 70 495511 2724.25 647 619 181.7

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