ASTROSAT CZTI

Data Quality Report

Orbit 37686

Creation date: 2024-06-27T21:43:06.836835
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/AS1A11_075T01_9000005342_37686cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37686cztM0_level2_quad_clean.evt
Size (bytes)501,223,68084,280,320
Size478.0 MB 80.4 MB
Events in quadrant A3,839,811523,837
Events in quadrant B3,358,459532,709
Events in quadrant C3,154,000545,870
Events in quadrant D4,396,653506,735

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156603
B0142452
C0133492
D0178112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6337240.378728%
B63371502.367051%
C6337160.252485%
D63373134.939246%

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 8933 6339 10 10 0.11% 0.16%
B 8933 6337 113 113 1.26% 1.78%
C 8932 6336 15 15 0.17% 0.24%
D 8932 6337 289 289 3.24% 4.56%

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 15 222 685677 4718.5 710 695 145.2
A 10 83 347282 2387.47 710 695 145.2
A 7 3 21816 145.49 710 695 145.2
B 5 172 117434 863.02 704 685 135.3
B 15 54 107603 790.34 704 685 135.3
B 5 200 100581 738.44 704 685 135.3
C 15 214 274320 1688.29 698 702 162.1
C 14 254 92873 568.72 698 702 162.1
C 0 10 46595 283.17 698 702 162.1
D 12 227 892109 5322.12 685 667 167.5
D 5 32 199136 1184.91 685 667 167.5
D 13 249 179119 1065.4 685 667 167.5

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