ASTROSAT CZTI

Data Quality Report

Orbit 56016

Creation date: 2026-02-06T23:07:00.846987
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_066T02_9000006546_56016cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56016cztM0_level2_quad_clean.evt
Size (bytes)652,104,000102,072,960
Size621.9 MB 97.3 MB
Events in quadrant A9,404,053558,631
Events in quadrant B4,114,661736,605
Events in quadrant C4,163,777656,477
Events in quadrant D5,872,276614,646

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332647
B0175912
C0182452
D0226752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7534181524.090788%
B75342483.291744%
C75342192.906822%
D75343594.765065%

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 7899 7536 1722 1722 21.80% 22.85%
B 7899 7536 76 76 0.96% 1.01%
C 7899 7536 154 154 1.95% 2.04%
D 7899 7536 299 299 3.79% 3.97%

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 4714987 25660.71 744 726 183.7
A 0 8 1033832 5623.41 744 726 183.7
A 4 249 307060 1667.44 744 726 183.7
B 5 185 216177 1224.5 806 775 175.9
B 4 171 181325 1026.37 806 775 175.9
B 10 247 147033 831.43 806 775 175.9
C 13 3 521096 2403.92 787 784 216.4
C 15 199 342065 1576.77 787 784 216.4
C 14 80 92124 422.0 787 784 216.4
D 11 129 2006842 9050.97 778 744 221.6
D 2 249 230512 1036.65 778 744 221.6
D 6 239 154709 694.65 778 744 221.6

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