ASTROSAT CZTI

Data Quality Report

Orbit 55295

Creation date: 2025-12-17T19:30:57.853957
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_009T01_9000006534_55295cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55295cztM0_level2_quad_clean.evt
Size (bytes)1,204,637,760269,516,160
Size1.1 GB 257.0 MB
Events in quadrant A9,345,0951,741,623
Events in quadrant B9,137,2271,869,253
Events in quadrant C11,245,7871,653,076
Events in quadrant D13,356,8871,556,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426585
B0420155
C0479195
D0536365

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194475142.643081%
B194465722.941479%
C194468674.458500%
D194469484.875039%

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 20757 19451 116 116 0.56% 0.60%
B 20756 19448 76 76 0.37% 0.39%
C 20756 19451 552 552 2.66% 2.84%
D 20756 19450 704 704 3.39% 3.62%

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 0 8 859533 1693.43 2057 2002 506.4
A 7 243 260410 510.3 2057 2002 506.4
A 4 3 68509 131.34 2057 2002 506.4
B 5 185 264437 600.25 2026 1944 437.3
B 0 199 235047 533.05 2026 1944 437.3
B 2 249 217493 492.9 2026 1944 437.3
C 13 3 1673661 3091.57 1990 1976 540.7
C 14 254 621755 1146.2 1990 1976 540.7
C 12 252 378740 696.78 1990 1976 540.7
D 11 129 3525529 6293.21 1986 1897 559.9
D 6 239 1002953 1787.89 1986 1897 559.9
D 7 96 266974 473.43 1986 1897 559.9

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