ASTROSAT CZTI

Data Quality Report

Orbit 57040

Creation date: 2026-04-14T04:20:46.234141
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_083T14_9000006564_57040cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_57040cztM0_level2_quad_clean.evt
Size (bytes)520,225,92095,564,160
Size496.1 MB 91.1 MB
Events in quadrant A6,756,798594,618
Events in quadrant B4,424,005658,619
Events in quadrant C3,540,256606,599
Events in quadrant D4,009,623560,782

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248362
B0178562
C0154032
D0166972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A678469810.288915%
B67844416.500590%
C6783470.692909%
D67831692.491523%

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 7699 6785 582 582 7.56% 8.58%
B 7699 6785 245 245 3.18% 3.61%
C 7698 6784 27 27 0.35% 0.40%
D 7698 6784 118 118 1.53% 1.74%

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 4 249 3507646 20457.71 689 672 171.4
A 4 13 298756 1738.85 689 672 171.4
A 3 14 147352 855.65 689 672 171.4
B 5 185 983067 6582.2 693 669 149.3
B 10 16 386478 2584.97 693 669 149.3
B 0 63 99452 661.86 693 669 149.3
C 13 3 224959 1185.46 691 687 189.2
C 9 38 205347 1081.8 691 687 189.2
C 1 16 169448 892.04 691 687 189.2
D 15 142 647622 3330.91 679 645 194.2
D 2 249 197042 1011.13 679 645 194.2
D 7 96 134915 691.28 679 645 194.2

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