ASTROSAT CZTI

Data Quality Report

Orbit 20160923_G05_106T01_9000000678_level2

Creation date: 2025-11-06T15:28:51.690152
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/AS1G05_106T01_9000000678cztM0_level2.fits modeM0/AS1G05_106T01_9000000678cztM0_level2_quad_clean.evt
Size (bytes)789,978,240730,520,640
Size753.4 MB 696.7 MB
Events in quadrant A4,752,7824,221,731
Events in quadrant B4,441,4784,102,438
Events in quadrant C4,742,1804,116,269
Events in quadrant D3,973,9073,671,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017940
B017820
C017940
D017880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01896260
B01990390
C01822700
D02098990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01340
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8767921122.408787%
B8772218772.139714%
C877079051.031845%
D8761834783.969504%

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 102423 88102 0 0 0.00% 0.00%
B 102422 88104 0 0 0.00% 0.00%
C 102423 88166 0 0 0.00% 0.00%
D 102423 87692 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 14 188 4743 11.28 1231 1143 319.1
A 0 29 4663 11.03 1231 1143 319.1
A 7 110 4177 9.51 1231 1143 319.1
B 2 9 3568 10.82 1176 1122 226.0
B 12 226 3015 8.38 1176 1122 226.0
B 2 8 2961 8.14 1176 1122 226.0
C 1 80 3452 6.92 1250 1154 332.1
C 12 241 3341 6.58 1250 1154 332.1
C 1 81 3323 6.53 1250 1154 332.1
D 11 82 3013 6.52 1133 1024 304.9
D 6 231 2877 6.08 1133 1024 304.9
D 1 19 2862 6.03 1133 1024 304.9

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