ASTROSAT CZTI

Data Quality Report

Orbit 34692

Creation date: 2022-02-27T05:35:56.075525
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_103T05_9000004930_34692cztM0_level2.evt modeM0/AS1A05_103T05_9000004930_34692cztM0_level2_quad_clean.evt
Size (bytes)335,560,32043,698,240
Size320.0 MB 41.7 MB
Events in quadrant A1,922,875274,792
Events in quadrant B3,491,469250,252
Events in quadrant C1,898,246270,428
Events in quadrant D2,588,763257,006

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145
B0144
C0155
D0153

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098161567
B0155462728
C095731622
D0120801793

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0897
B09514
C0956
D09614

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A386170.181300%
B375358515.587530%
C3829130.339514%
D3794611.607802%

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 6159 4089 1 1 0.02% 0.02%
B 6056 4026 386 386 6.37% 9.59%
C 6131 4082 2 2 0.03% 0.05%
D 6112 4082 24 24 0.39% 0.59%

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 15 169 167945 1856.98 444 435 90.2
A 10 83 15380 165.68 444 435 90.2
A 9 143 7377 76.96 444 435 90.2
B 5 172 1691158 21537.16 399 388 78.5
B 5 255 183512 2332.65 399 388 78.5
B 15 85 11842 145.9 399 388 78.5
C 15 214 156992 1555.42 426 429 100.7
C 14 67 42035 413.35 426 429 100.7
C 0 10 21947 213.78 426 429 100.7
D 8 195 688500 6629.92 421 409 103.8
D 2 250 84638 811.57 421 409 103.8
D 10 199 62599 599.22 421 409 103.8

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