ASTROSAT CZTI

Data Quality Report

Orbit 31156

Creation date: 2024-06-27T20:24:13.314560
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/AS1C06_002T01_9000004500_31156cztM0_level2.evt modeM0/AS1C06_002T01_9000004500_31156cztM0_level2_quad_clean.evt
Size (bytes)345,542,40053,176,320
Size329.5 MB 50.7 MB
Events in quadrant A1,753,503342,006
Events in quadrant B3,031,611336,205
Events in quadrant C1,951,654332,648
Events in quadrant D3,458,962319,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081311
B0121601
C084741
D0130801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3957170.429618%
B3958751.894896%
C3958781.970692%
D39581794.522486%

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 4247 3958 0 0 0.00% 0.00%
B 4248 3959 0 0 0.00% 0.00%
C 4248 3959 0 0 0.00% 0.00%
D 4248 3959 133 133 3.13% 3.36%

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 13 254 7886 79.79 453 444 93.3
A 3 137 4641 45.0 453 444 93.3
A 0 226 3755 35.5 453 444 93.3
B 6 159 1176621 13502.64 451 439 87.1
B 0 190 40504 459.94 451 439 87.1
B 0 183 15999 178.62 451 439 87.1
C 14 238 76664 719.68 440 441 105.9
C 8 208 58182 545.18 440 441 105.9
C 3 233 40903 382.03 440 441 105.9
D 8 195 1208509 10547.45 431 423 114.5
D 13 174 218360 1902.74 431 423 114.5
D 2 250 176681 1538.86 431 423 114.5

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