ASTROSAT CZTI

Data Quality Report

Orbit 53737

Creation date: 2025-09-03T21:28:40.088630
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_022T04_9000006506_53737cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53737cztM0_level2_quad_clean.evt
Size (bytes)1,138,340,16078,209,280
Size1.1 GB 74.6 MB
Events in quadrant A16,946,955154,943
Events in quadrant B3,848,595728,817
Events in quadrant C11,258,140457,745
Events in quadrant D9,514,754512,372

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0554700
B0169230
C0386034
D0334910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7384587679.577465%
B73841021.381365%
C7383259635.161858%
D7384157521.329902%

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 7384 7384 5591 5591 75.72% 75.72%
B 7384 7384 57 57 0.77% 0.77%
C 7384 7384 2216 2216 30.01% 30.01%
D 7384 7384 1469 1469 19.89% 19.89%

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 13732303 140335.45 392 381 97.9
A 3 78 1310752 13391.53 392 381 97.9
A 3 30 80117 814.87 392 381 97.9
B 12 3 208163 1285.6 754 729 161.4
B 3 233 139941 862.79 754 729 161.4
B 5 185 118048 727.1 754 729 161.4
C 15 224 3886398 22381.4 630 625 173.6
C 1 241 1315636 7574.24 630 625 173.6
C 6 13 1249746 7194.73 630 625 173.6
D 1 241 2689954 13896.17 679 649 193.5
D 2 172 1509654 7797.33 679 649 193.5
D 2 153 1054997 5448.02 679 649 193.5

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