ASTROSAT CZTI

Data Quality Report

Orbit 23385

Creation date: 2024-06-27T18:53:37.939972
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/AS1A07_138T09_9000003458_23385cztM0_level2.evt modeM0/AS1A07_138T09_9000003458_23385cztM0_level2_quad_clean.evt
Size (bytes)1,203,042,240248,022,720
Size1.1 GB 236.5 MB
Events in quadrant A8,122,0841,588,535
Events in quadrant B8,827,8831,608,005
Events in quadrant C8,743,2421,564,492
Events in quadrant D9,554,8501,542,041

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036221115
B037998117
C037733119
D040702128

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17547790.450219%
B175442521.436389%
C175451510.860644%
D175412321.322616%

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 19783 17575 31 31 0.16% 0.18%
B 19783 17562 140 140 0.71% 0.80%
C 19783 17566 1 1 0.01% 0.01%
D 19783 17563 167 167 0.84% 0.95%

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 15 174 179672 429.72 2061 2020 413.4
A 13 254 25059 55.73 2061 2020 413.4
A 3 137 18802 40.59 2061 2020 413.4
B 0 229 391858 1005.76 2046 1992 387.6
B 0 189 267913 686.02 2046 1992 387.6
B 0 190 81657 205.52 2046 1992 387.6
C 10 9 587786 1273.58 1981 1992 460.0
C 14 238 317211 685.32 1981 1992 460.0
C 7 247 89365 189.96 1981 1992 460.0
D 1 52 1301596 2701.19 1999 1944 481.1
D 7 238 418092 864.92 1999 1944 481.1
D 13 174 180311 370.72 1999 1944 481.1

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