ASTROSAT CZTI

Data Quality Report

Orbit 54287

Creation date: 2025-10-10T21:59:46.132733
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_126T15_9000006516_54287cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54287cztM0_level2_quad_clean.evt
Size (bytes)519,690,24094,242,240
Size495.6 MB 89.9 MB
Events in quadrant A3,473,390644,020
Events in quadrant B3,938,045685,753
Events in quadrant C6,683,780503,545
Events in quadrant D4,614,076546,520

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151891
B0164311
C0249171
D0184743

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6794921.354136%
B6795851.250920%
C6795132019.426049%
D67943965.828672%

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 7109 6795 35 35 0.49% 0.52%
B 7110 6796 25 25 0.35% 0.37%
C 7109 6795 1340 1340 18.85% 19.72%
D 7109 6795 350 350 4.92% 5.15%

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 7 206 122787 690.63 714 697 176.8
A 4 78 115054 646.88 714 697 176.8
A 7 29 101511 570.28 714 697 176.8
B 7 0 757705 5059.55 702 677 149.6
B 5 185 234073 1559.89 702 677 149.6
B 10 247 45490 299.51 702 677 149.6
C 1 241 3298932 19153.49 631 624 172.2
C 14 254 770053 4468.12 631 624 172.2
C 12 252 41005 234.5 631 624 172.2
D 3 12 737199 3807.49 679 646 193.4
D 2 153 344831 1779.21 679 646 193.4
D 8 176 283354 1461.41 679 646 193.4

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