ASTROSAT CZTI

Data Quality Report

Orbit 20160912_G05_243T01_9000000654_level2

Creation date: 2025-11-06T11:31:28.772335
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_243T01_9000000654cztM0_level2.fits modeM0/AS1G05_243T01_9000000654cztM0_level2_quad_clean.evt
Size (bytes)89,357,76089,959,680
Size85.2 MB 85.8 MB
Events in quadrant A531,020534,992
Events in quadrant B519,276535,902
Events in quadrant C530,734525,538
Events in quadrant D451,392454,116

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205690
B0210870
C0203380
D0255940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97104935.077240%
B97115055.200288%
C97112732.811245%
D97116937.136237%

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 10076 9711 0 0 0.00% 0.00%
B 10076 9711 0 0 0.00% 0.00%
C 10076 9711 0 0 0.00% 0.00%
D 10076 9708 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 29 516 10.22 137 128 38.0
A 14 188 511 10.09 137 128 38.0
A 14 204 474 9.12 137 128 38.0
B 2 9 488 11.66 137 129 30.8
B 2 8 369 7.79 137 129 30.8
B 5 128 367 7.73 137 129 30.8
C 1 81 395 6.97 140 129 38.1
C 1 80 394 6.95 140 129 38.1
C 2 191 389 6.82 140 129 38.1
D 11 82 361 6.72 128 116 36.4
D 1 19 346 6.31 128 116 36.4
D 6 83 339 6.12 128 116 36.4

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