ASTROSAT CZTI

Data Quality Report

Orbit 53427

Creation date: 2025-08-14T00:10:17.054498
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/AS1C09_011T09_9000006494_53427cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53427cztM0_level2_quad_clean.evt
Size (bytes)739,359,36075,968,640
Size705.1 MB 72.4 MB
Events in quadrant A3,941,393571,654
Events in quadrant B5,852,827545,539
Events in quadrant C11,133,896335,043
Events in quadrant D5,985,467436,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157581
B0214931
C0371234
D0218951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58823325.644339%
B5883101417.236104%
C5882273646.514791%
D5882112119.058143%

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 7046 5882 210 210 2.98% 3.57%
B 7047 5883 554 554 7.86% 9.42%
C 7046 5882 2748 2748 39.00% 46.72%
D 7046 5882 982 982 13.94% 16.70%

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 63 817417 5262.34 621 607 155.2
A 15 174 336906 2166.62 621 607 155.2
A 8 249 65836 420.24 621 607 155.2
B 0 171 1237310 10013.71 585 566 123.5
B 4 171 1193317 9657.51 585 566 123.5
B 4 206 311201 2515.16 585 566 123.5
C 9 38 3339696 25291.27 482 477 132.0
C 15 224 2340005 17719.6 482 477 132.0
C 1 241 1228652 9302.21 482 477 132.0
D 2 120 1706936 10651.78 564 539 160.2
D 2 172 1021978 6376.09 564 539 160.2
D 12 1 366668 2285.47 564 539 160.2

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