ASTROSAT CZTI

Data Quality Report

Orbit 57076

Creation date: 2026-04-16T15:09:38.495641
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_083T10_9000006566_57076cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57076cztM0_level2_quad_clean.evt
Size (bytes)479,350,08093,484,800
Size457.1 MB 89.2 MB
Events in quadrant A3,693,371583,985
Events in quadrant B4,172,756653,445
Events in quadrant C5,453,626576,845
Events in quadrant D3,911,442556,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157441
B0169871
C0206571
D0161691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65936359.631427%
B65944046.126782%
C65944917.446163%
D65942674.049136%

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 7432 6592 234 234 3.15% 3.55%
B 7433 6593 190 190 2.56% 2.88%
C 7433 6593 327 327 4.40% 4.96%
D 7433 6594 189 189 2.54% 2.87%

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 13 248 980566 5993.8 670 651 163.5
A 4 249 50687 306.05 670 651 163.5
A 10 251 26545 158.38 670 651 163.5
B 10 16 775280 5258.58 687 663 147.3
B 4 171 509040 3451.18 687 663 147.3
B 0 63 58449 392.29 687 663 147.3
C 1 16 1217911 6550.36 682 675 185.8
C 12 254 967636 5203.55 682 675 185.8
C 15 198 360471 1936.18 682 675 185.8
D 12 33 592622 3056.81 688 658 193.7
D 15 142 273658 1409.73 688 658 193.7
D 3 12 71770 367.21 688 658 193.7

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