ASTROSAT CZTI

Data Quality Report

Orbit 54340

Creation date: 2025-10-14T11:12:02.464735
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_54340cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54340cztM0_level2_quad_clean.evt
Size (bytes)847,416,96076,487,040
Size808.2 MB 72.9 MB
Events in quadrant A2,978,477637,439
Events in quadrant B3,906,207670,881
Events in quadrant C9,824,661382,689
Events in quadrant D14,151,616168,227

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137832
B0158852
C0337832
D0464822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6550340.519084%
B65502153.282443%
C6550262140.015267%
D6550485474.106870%

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 7665 6551 14 14 0.18% 0.21%
B 7665 6551 145 145 1.89% 2.21%
C 7665 6551 2596 2596 33.87% 39.63%
D 7664 6549 4428 4428 57.78% 67.61%

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 117632 692.34 686 669 168.9
A 8 246 50548 295.25 686 669 168.9
A 0 8 35382 205.48 686 669 168.9
B 7 0 404772 2804.18 677 651 144.1
B 5 185 350041 2424.4 677 651 144.1
B 10 247 163961 1133.2 677 651 144.1
C 1 241 5990485 40607.18 534 529 147.5
C 15 147 1439456 9754.79 534 529 147.5
C 14 254 131240 886.12 534 529 147.5
D 8 176 9299741 96945.24 333 317 95.9
D 15 108 3360687 35031.4 333 317 95.9
D 3 12 39988 413.56 333 317 95.9

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