ASTROSAT CZTI

Data Quality Report

Orbit 53936

Creation date: 2025-09-17T10:51:08.561319
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_057T04_9000006508_53936cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53936cztM0_level2_quad_clean.evt
Size (bytes)640,592,64091,039,680
Size610.9 MB 86.8 MB
Events in quadrant A3,846,513660,951
Events in quadrant B3,811,278703,999
Events in quadrant C4,739,236577,491
Events in quadrant D10,792,330344,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162642
B0161433
C0188142
D0367092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67332323.445715%
B67322273.371955%
C673268310.145573%
D6732309846.019014%

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 7893 6734 198 198 2.51% 2.94%
B 7892 6732 118 118 1.50% 1.75%
C 7892 6733 662 662 8.39% 9.83%
D 7892 6732 2485 2485 31.49% 36.91%

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 0 8 473542 2632.89 732 715 179.6
A 15 174 255423 1418.32 732 715 179.6
A 4 249 103469 572.18 732 715 179.6
B 0 213 578696 3681.08 735 707 157.0
B 5 185 92097 582.04 735 707 157.0
B 5 250 74889 472.45 735 707 157.0
C 1 241 1643062 8786.63 676 670 186.9
C 12 252 134894 718.08 676 670 186.9
C 9 38 96875 514.69 676 670 186.9
D 8 176 6400753 43490.17 502 478 147.2
D 10 172 776839 5275.41 502 478 147.2
D 3 12 719945 4888.81 502 478 147.2

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