ASTROSAT CZTI

Data Quality Report

Orbit 17968

Creation date: 2024-06-27T17:43:17.421802
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/AS1A05_019T01_9000002672_17968cztM0_level2.evt modeM0/AS1A05_019T01_9000002672_17968cztM0_level2_quad_clean.evt
Size (bytes)598,426,560107,919,360
Size570.7 MB 102.9 MB
Events in quadrant A4,578,837673,919
Events in quadrant B4,348,475678,567
Events in quadrant C4,302,715655,936
Events in quadrant D4,300,913653,448

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193283
B0186473
C0181613
D0188643

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87271872.142775%
B87271701.947978%
C87271421.627134%
D8728870.996792%

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 9457 8730 58 58 0.61% 0.66%
B 9457 8730 16 16 0.17% 0.18%
C 9457 8730 0 0 0.00% 0.00%
D 9458 8731 26 26 0.27% 0.30%

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 14 237 430673 2003.4 1055 1029 214.5
A 15 174 90911 419.11 1055 1029 214.5
A 0 226 9271 38.43 1055 1029 214.5
B 0 197 90005 432.16 1056 1025 205.9
B 7 220 78793 377.7 1056 1025 205.9
B 12 111 24630 114.64 1056 1025 205.9
C 14 238 154412 634.09 1023 1030 241.9
C 3 233 135785 557.08 1023 1030 241.9
C 8 128 12842 48.83 1023 1030 241.9
D 12 233 86174 334.55 1039 1009 254.6
D 5 222 71864 278.33 1039 1009 254.6
D 2 33 71434 276.65 1039 1009 254.6

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