ASTROSAT CZTI

Data Quality Report

Orbit 34657

Creation date: 2022-02-24T20:08:23.247509
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/AS1T05_008T01_9000004956_34657cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34657cztM0_level2_quad_clean.evt
Size (bytes)863,769,600101,831,040
Size823.8 MB 97.1 MB
Events in quadrant A4,491,529627,162
Events in quadrant B6,595,190591,218
Events in quadrant C4,958,514618,342
Events in quadrant D9,473,610588,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192973
B0255422
C0199662
D0346722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9491110.115899%
B94916516.859130%
C9491610.642714%
D94914514.751870%

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 13287 9493 1 1 0.01% 0.01%
B 13287 9493 438 438 3.30% 4.61%
C 13287 9493 43 43 0.32% 0.45%
D 13287 9493 359 359 2.70% 3.78%

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 58469 251.98 1131 1107 227.6
A 9 143 36832 156.93 1131 1107 227.6
A 13 6 23982 100.49 1131 1107 227.6
B 5 172 1773214 8615.69 1084 1057 205.7
B 5 255 341098 1653.18 1084 1057 205.7
B 4 81 58896 281.2 1084 1057 205.7
C 15 214 398935 1579.27 1091 1100 251.9
C 0 10 188106 742.35 1091 1100 251.9
C 14 67 36302 139.74 1091 1100 251.9
D 8 195 3675647 13715.43 1083 1052 267.9
D 13 249 300518 1117.76 1083 1052 267.9
D 12 233 241299 896.72 1083 1052 267.9

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