ASTROSAT CZTI

Data Quality Report

Orbit 58569

Creation date: 2026-07-25T23:31:17.919103
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_044T04_9000006592_58569cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58569cztM0_level2_quad_clean.evt
Size (bytes)433,981,44098,493,120
Size413.9 MB 93.9 MB
Events in quadrant A4,315,670640,494
Events in quadrant B3,364,914700,855
Events in quadrant C3,909,386613,833
Events in quadrant D3,970,886574,517

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172892
B0145092
C0162022
D0162752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64812123.271100%
B6481911.404104%
C64811362.098442%
D64811722.653911%

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 7576 6482 91 91 1.20% 1.40%
B 7576 6482 12 12 0.16% 0.19%
C 7576 6482 85 85 1.12% 1.31%
D 7576 6482 107 107 1.41% 1.65%

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 3 14 594102 3312.54 724 707 179.1
A 15 233 565559 3153.2 724 707 179.1
A 7 64 128485 713.3 724 707 179.1
B 0 171 172785 1108.7 725 699 155.2
B 4 171 89421 571.61 725 699 155.2
B 8 234 45398 287.98 725 699 155.2
C 6 13 348609 1794.98 709 703 193.8
C 12 252 112183 575.17 709 703 193.8
C 4 5 107612 551.59 709 703 193.8
D 2 249 398014 1978.41 706 678 200.8
D 8 240 303815 1509.38 706 678 200.8
D 2 120 122818 608.16 706 678 200.8

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