ASTROSAT CZTI

Data Quality Report

Orbit 00952

Creation date: 2024-06-27T14:05:13.101386
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/AS1P01_998T01_9000000188_00952cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00952cztM0_level2_quad_clean.evt
Size (bytes)1,038,107,52098,835,840
Size990.0 MB 94.3 MB
Events in quadrant A7,672,564651,628
Events in quadrant B8,084,288650,475
Events in quadrant C8,040,194625,469
Events in quadrant D7,216,699617,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273520
B0285330
C0284590
D0260620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6412340.530256%
B6412330.514660%
C6412230.358702%
D6411741.154266%

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 7462 6413 152 152 2.04% 2.37%
B 7462 6413 224 224 3.00% 3.49%
C 7462 6413 180 180 2.41% 2.81%
D 7461 6412 185 185 2.48% 2.89%

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 11 79 8794 14.11 1999 2015 480.4
A 3 111 6147 8.6 1999 2015 480.4
A 14 203 5070 6.36 1999 2015 480.4
B 8 234 120878 246.41 2047 2056 482.2
B 15 22 49292 97.96 2047 2056 482.2
B 0 220 45006 89.07 2047 2056 482.2
C 10 34 509282 989.06 1840 1897 513.0
C 15 241 298108 577.41 1840 1897 513.0
C 3 111 25035 45.1 1840 1897 513.0
D 2 16 231030 411.26 1807 1866 557.2
D 1 4 187268 332.73 1807 1866 557.2
D 12 22 13431 20.75 1807 1866 557.2

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