ASTROSAT CZTI

Data Quality Report

Orbit 52423

Creation date: 2025-06-28T13:35:08.172386
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_52423cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52423cztM0_level2_quad_clean.evt
Size (bytes)961,709,76066,291,840
Size917.2 MB 63.2 MB
Events in quadrant A3,164,749648,460
Events in quadrant B3,192,715699,487
Events in quadrant C14,661,966175,953
Events in quadrant D14,060,74617,042

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01456216
B0144979
C048283167
D046520168

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01370
C01371
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6695660.985810%
B6702701.044464%
C6681493873.911091%
D6679654397.963767%

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 8921 6704 41 41 0.46% 0.61%
B 8922 6706 19 19 0.21% 0.28%
C 8921 6698 4682 4682 52.48% 69.90%
D 8921 6681 3834 3834 42.98% 57.39%

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 5 240 167059 966.45 691 675 172.2
A 4 61 55080 316.01 691 675 172.2
A 8 25 46484 266.08 691 675 172.2
B 4 171 147134 977.64 696 671 149.8
B 10 247 39823 261.34 696 671 149.8
B 4 81 39784 261.08 696 671 149.8
C 9 38 3801332 34519.85 393 391 110.1
C 3 242 3403270 30904.68 393 391 110.1
C 1 45 2296611 20854.09 393 391 110.1
D 12 18 11588401 320736.27 115 109 36.1
D 12 17 1095239 30310.59 115 109 36.1
D 12 6 327025 9048.25 115 109 36.1

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