ASTROSAT CZTI

Data Quality Report

Orbit 23765

Creation date: 2024-06-27T18:58:28.004043
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_091T10_9000003520_23765cztM0_level2.evt modeM0/AS1A07_091T10_9000003520_23765cztM0_level2_quad_clean.evt
Size (bytes)547,525,44084,997,440
Size522.2 MB 81.1 MB
Events in quadrant A3,284,011535,578
Events in quadrant B3,519,756549,722
Events in quadrant C3,644,225532,954
Events in quadrant D5,704,439513,373

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139642
B0147602
C0150772
D0215013

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6335570.899763%
B6335961.515391%
C63351542.430939%
D63344737.467635%

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 7555 6335 0 0 0.00% 0.00%
B 7555 6335 7 7 0.09% 0.11%
C 7555 6335 11 11 0.15% 0.17%
D 7554 6334 371 371 4.91% 5.86%

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 13 254 10889 59.63 851 836 168.6
A 0 226 7516 39.62 851 836 168.6
A 3 137 7103 37.17 851 836 168.6
B 3 64 117568 731.05 851 833 159.7
B 0 229 57950 357.69 851 833 159.7
B 12 111 19021 113.9 851 833 159.7
C 7 247 251465 1287.83 832 838 194.6
C 14 238 134263 685.6 832 838 194.6
C 0 10 16697 81.49 832 838 194.6
D 1 52 1528928 7999.38 807 785 191.0
D 8 195 597007 3121.04 807 785 191.0
D 13 174 318362 1662.42 807 785 191.0

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