ASTROSAT CZTI

Data Quality Report

Orbit 56000

Creation date: 2026-02-06T16:35:40.183238
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_066T02_9000006546_56000cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56000cztM0_level2_quad_clean.evt
Size (bytes)577,932,48088,591,680
Size551.2 MB 84.5 MB
Events in quadrant A9,564,121420,991
Events in quadrant B3,546,303663,186
Events in quadrant C3,253,721584,994
Events in quadrant D4,507,836545,689

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0329642
B0152012
C0149472
D0182072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6704250237.321002%
B67051341.998509%
C67051542.296793%
D67052974.429530%

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 8818 6703 2427 2427 27.52% 36.21%
B 8820 6706 37 37 0.42% 0.55%
C 8820 6706 106 106 1.20% 1.58%
D 8820 6707 276 276 3.13% 4.12%

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 12 115 6544130 43304.88 606 591 151.1
A 3 14 187373 1236.12 606 591 151.1
A 7 64 115230 758.68 606 591 151.1
B 5 185 117449 757.99 715 686 154.0
B 0 199 116426 751.35 715 686 154.0
B 0 173 95996 618.73 715 686 154.0
C 12 254 386053 2010.12 698 693 191.7
C 12 252 48680 250.31 698 693 191.7
C 14 80 24183 122.53 698 693 191.7
D 8 240 595303 3043.49 689 659 195.4
D 2 249 362281 1850.84 689 659 195.4
D 6 239 301533 1539.92 689 659 195.4

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