ASTROSAT CZTI

Data Quality Report

Orbit 54365

Creation date: 2025-10-16T05:06:03.855294
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_126T15_9000006516_54365cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54365cztM0_level2_quad_clean.evt
Size (bytes)2,250,360,000185,359,680
Size2.1 GB 176.8 MB
Events in quadrant A8,568,3991,578,189
Events in quadrant B9,732,2291,682,594
Events in quadrant C24,756,508903,005
Events in quadrant D38,915,173261,389

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381902
B0408232
C0856432
D01273852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172033161.836889%
B172043772.191351%
C17204690140.112764%
D172041445083.992095%

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 17713 17206 256 256 1.45% 1.49%
B 17714 17207 149 149 0.84% 0.87%
C 17714 17207 6603 6603 37.28% 38.37%
D 17713 17206 12131 12131 68.49% 70.50%

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 4 249 637164 1434.4 1795 1746 443.0
A 5 243 378446 850.37 1795 1746 443.0
A 15 174 121743 270.88 1795 1746 443.0
B 7 0 798963 2120.14 1772 1706 376.0
B 0 213 638365 1693.06 1772 1706 376.0
B 10 247 202635 534.33 1772 1706 376.0
C 1 241 15967120 42823.59 1364 1349 372.8
C 2 255 970182 2598.62 1364 1349 372.8
C 1 29 823083 2204.07 1364 1349 372.8
D 8 176 34984526 177319.69 689 658 197.3
D 3 12 412365 2086.78 689 658 197.3
D 15 108 324455 1641.2 689 658 197.3

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