ASTROSAT CZTI

Data Quality Report

Orbit 57216

Creation date: 2026-04-29T22:48:42.809021
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_070T08_9000006568_57216cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57216cztM0_level2_quad_clean.evt
Size (bytes)458,061,12090,046,080
Size436.8 MB 85.9 MB
Events in quadrant A3,658,232548,833
Events in quadrant B4,053,647643,271
Events in quadrant C5,449,364543,856
Events in quadrant D3,298,957545,934

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157151
B0165701
C0207431
D0144102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A637367910.654323%
B63732253.530519%
C63746009.413241%
D63731131.773105%

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 7382 6372 271 271 3.67% 4.25%
B 7383 6374 98 98 1.33% 1.54%
C 7384 6375 478 478 6.47% 7.50%
D 7382 6373 88 88 1.19% 1.38%

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 0 128 1255895 8267.56 608 592 151.8
A 3 95 26226 168.83 608 592 151.8
A 13 248 9591 59.27 608 592 151.8
B 0 183 721382 5127.92 664 641 140.6
B 10 16 270042 1916.73 664 641 140.6
B 5 185 154227 1092.73 664 641 140.6
C 15 224 2785722 16122.98 631 627 172.7
C 12 254 64374 369.03 631 627 172.7
C 14 254 45000 256.88 631 627 172.7
D 12 33 222903 1188.57 652 621 187.0
D 8 240 174390 929.17 652 621 187.0
D 2 120 138600 737.79 652 621 187.0

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