ASTROSAT CZTI

Data Quality Report

Orbit 20220822_A10_094T14_9000005308_level2

Creation date: 2026-01-05T00:11:32.699888
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/AS1A10_094T14_9000005308cztM0_level2.fits modeM0/AS1A10_094T14_9000005308cztM0_level2_quad_clean.evt
Size (bytes)31,325,76046,054,080
Size29.9 MB 43.9 MB
Events in quadrant A189,840304,030
Events in quadrant B172,942283,202
Events in quadrant C186,158305,692
Events in quadrant D148,760250,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075450
B0102630
C074550
D0120990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3544220.620767%
B35442456.913093%
C3544270.761851%
D354460417.042889%

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 5517 3544 0 0 0.00% 0.00%
B 5517 3543 0 0 0.00% 0.00%
C 5517 3544 0 0 0.00% 0.00%
D 5517 3537 0 0 0.00% 0.00%

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 29 165 8.45 49 46 14.1
A 9 19 162 8.23 49 46 14.1
A 7 110 160 8.09 49 46 14.1
B 2 9 156 10.17 45 44 11.0
B 3 17 137 8.45 45 44 11.0
B 3 80 132 7.99 45 44 11.0
C 3 202 143 6.59 49 46 14.7
C 3 203 142 6.52 49 46 14.7
C 12 241 134 5.98 49 46 14.7
D 6 83 119 6.21 42 38 13.0
D 15 94 116 5.98 42 38 13.0
D 1 3 114 5.83 42 38 13.0

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