ASTROSAT CZTI

Data Quality Report

Orbit 36018

Creation date: 2022-08-09T19:51:47.731092
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/AS1T04_069T01_9000005158_36018cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36018cztM0_level2_quad_clean.evt
Size (bytes)898,632,000143,383,680
Size857.0 MB 136.7 MB
Events in quadrant A4,800,962953,609
Events in quadrant B7,222,395926,775
Events in quadrant C5,949,617932,705
Events in quadrant D8,589,354858,391

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200234
B0278703
C0233583
D0318366

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9673200.206761%
B96735405.582549%
C96733523.638995%
D96727697.950786%

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 13439 9675 7 7 0.05% 0.07%
B 13439 9675 385 385 2.86% 3.98%
C 13439 9675 311 311 2.31% 3.21%
D 13439 9675 732 732 5.45% 7.57%

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 280754 1197.0 1157 1136 233.6
A 10 248 24093 98.28 1157 1136 233.6
A 13 254 15748 62.55 1157 1136 233.6
B 5 172 1142859 5376.82 1117 1085 212.4
B 0 213 900081 4233.54 1117 1085 212.4
B 0 190 511406 2403.19 1117 1085 212.4
C 9 187 1025511 4046.37 1095 1102 253.2
C 15 214 398635 1570.24 1095 1102 253.2
C 0 10 254487 1000.86 1095 1102 253.2
D 12 235 2491730 9443.92 1091 1062 263.7
D 12 6 1166220 4417.96 1091 1062 263.7
D 13 249 206810 780.14 1091 1062 263.7

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