ASTROSAT CZTI

Data Quality Report

Orbit 54272

Creation date: 2025-10-09T21:21:55.368038
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_54272cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54272cztM0_level2_quad_clean.evt
Size (bytes)476,884,80093,133,440
Size454.8 MB 88.8 MB
Events in quadrant A2,990,908630,207
Events in quadrant B3,920,584657,153
Events in quadrant C3,334,625585,982
Events in quadrant D6,888,469482,032

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138981
B0163261
C0151021
D0250751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6660971.456456%
B66613014.518841%
C66611682.522144%
D6661112416.874343%

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 7240 6661 10 10 0.14% 0.15%
B 7241 6662 185 185 2.55% 2.78%
C 7241 6663 70 70 0.97% 1.05%
D 7241 6662 1016 1016 14.03% 15.25%

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 15 174 50380 290.24 696 680 171.2
A 11 3 46333 266.6 696 680 171.2
A 10 253 40614 233.2 696 680 171.2
B 5 236 405881 2824.25 676 653 143.5
B 0 213 258260 1795.4 676 653 143.5
B 5 185 250781 1743.27 676 653 143.5
C 1 29 267511 1462.28 670 663 182.5
C 12 252 146849 801.07 670 663 182.5
C 14 254 124907 680.83 670 663 182.5
D 8 176 3186101 18018.23 626 598 176.8
D 3 12 700644 3959.69 626 598 176.8
D 10 181 177737 1001.96 626 598 176.8

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