ASTROSAT CZTI

Data Quality Report

Orbit 46928

Creation date: 2024-06-27T23:29:33.403643
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/AS1A13_074T06_9000006284_46928cztM0_level2.fits modeM0/AS1A13_074T06_9000006284_46928cztM0_level2_quad_clean.evt
Size (bytes)107,521,92020,059,200
Size102.5 MB 19.1 MB
Events in quadrant A1,456,181124,092
Events in quadrant B787,404137,131
Events in quadrant C549,836134,330
Events in quadrant D1,086,596117,752

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140709307836456140707423584302
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053081
B031841
C026071
D040921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12541239.808612%
B1254312.472089%
C125430.239234%
D12541028.133971%

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 1254 1254 6 6 0.48% 0.48%
B 1254 1254 2 2 0.16% 0.16%
C 1254 1254 0 0 0.00% 0.00%
D 1254 1254 101 101 8.05% 8.05%

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 10 83 880203 28475.02 139 136 30.9
A 15 254 9017 287.35 139 136 30.9
A 10 255 7395 234.87 139 136 30.9
B 3 112 180003 5833.52 143 138 30.8
B 0 198 12836 411.83 143 138 30.8
B 4 171 7619 242.63 143 138 30.8
C 14 254 1417 36.51 139 140 35.0
C 9 237 1405 36.17 139 140 35.0
C 0 207 1221 30.91 139 140 35.0
D 1 52 363578 10097.82 135 131 36.0
D 12 0 78642 2181.31 135 131 36.0
D 10 181 64460 1787.28 135 131 36.0

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