ASTROSAT CZTI

Data Quality Report

Orbit 20260511_A14_113T09_9000006574_level2

Creation date: 2026-05-23T03:25:00.940851
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_113T09_9000006574cztM0_level2.fits modeM0/AS1A14_113T09_9000006574cztM0_level2_quad_clean.evt
Size (bytes)5,047,980,4802,112,514,560
Size4.7 GB 2.0 GB
Events in quadrant A30,529,2206,057,528
Events in quadrant B27,862,8646,170,807
Events in quadrant C28,301,4885,287,097
Events in quadrant D24,802,4775,093,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122500
B0122500
C0122500
D0122500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07340
B07340
C07340
D07340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013297190
B014744740
C018143730
D016947200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A603549101651.684205%
B603549277414.596313%
C603540468147.756570%
D603547415346.881651%

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 681715 592078 0 0 0.00% 0.00%
B 681716 591820 0 0 0.00% 0.00%
C 681716 591611 0 0 0.00% 0.00%
D 681716 590754 0 0 0.00% 0.00%

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 14 188 34126 9.99 7989 7343 2680.9
A 9 255 30565 8.66 7989 7343 2680.9
A 14 204 28120 7.75 7989 7343 2680.9
B 2 9 32622 14.96 7359 6955 1715.2
B 2 8 28629 12.64 7359 6955 1715.2
B 3 25 23045 9.38 7359 6955 1715.2
C 2 31 22813 6.13 7541 6853 2605.4
C 7 221 22396 5.97 7541 6853 2605.4
C 15 127 21960 5.8 7541 6853 2605.4
D 6 218 30964 10.37 7081 6286 2380.8
D 15 11 24305 7.57 7081 6286 2380.8
D 8 12 23072 7.05 7081 6286 2380.8

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