ASTROSAT CZTI

Data Quality Report

Orbit 52422

Creation date: 2025-06-28T13:25:35.701757
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/AS1A13_037T01_9000006476_52422cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52422cztM0_level2_quad_clean.evt
Size (bytes)850,481,28067,708,800
Size811.1 MB 64.6 MB
Events in quadrant A3,295,503615,360
Events in quadrant B3,290,508660,160
Events in quadrant C12,047,034318,919
Events in quadrant D12,342,4741,542

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147822
B0147232
C0402679
D0411632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6514951.458397%
B65141131.734725%
C6513323049.593121%
D6513650299.831107%

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 7573 6513 62 62 0.82% 0.95%
B 7573 6513 34 34 0.45% 0.52%
C 7572 6511 2963 2963 39.13% 45.51%
D 7571 6510 2541 2541 33.56% 39.03%

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 8 25 311483 1868.91 669 653 166.3
A 13 248 78875 470.32 669 653 166.3
A 12 3 58443 347.47 669 653 166.3
B 4 171 225199 1553.87 670 646 144.5
B 4 81 70426 482.87 670 646 144.5
B 10 247 58586 400.93 670 646 144.5
C 9 38 4173269 29690.58 505 501 140.5
C 1 45 2065236 14691.25 505 501 140.5
C 1 46 884887 6292.69 505 501 140.5
D 12 18 9904758 470534.38 65 61 21.0
D 12 17 1612305 76591.56 65 61 21.0
D 12 6 181861 8636.62 65 61 21.0

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