ASTROSAT CZTI

Data Quality Report

Orbit 21498

Creation date: 2024-06-27T18:28:38.651302
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/AS1T03_141T01_9000003174_21498cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21498cztM0_level2_quad_clean.evt
Size (bytes)618,814,080104,590,080
Size590.1 MB 99.7 MB
Events in quadrant A3,475,634685,972
Events in quadrant B3,694,204694,078
Events in quadrant C3,506,484677,105
Events in quadrant D7,580,416612,530

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148770
B0153630
C0149440
D0274880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71501281.790210%
B71501722.405594%
C71501602.237762%
D715098513.776224%

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 7619 7149 0 0 0.00% 0.00%
B 7619 7149 17 17 0.22% 0.24%
C 7619 7149 0 0 0.00% 0.00%
D 7619 7149 980 980 12.86% 13.71%

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 12127 62.15 901 883 180.9
A 0 226 7816 38.32 901 883 180.9
A 3 137 7673 37.53 901 883 180.9
B 10 249 91664 528.41 893 871 171.8
B 0 230 37698 214.33 893 871 171.8
B 0 190 29875 168.8 893 871 171.8
C 14 238 136097 670.25 861 865 201.8
C 4 175 7010 30.46 861 865 201.8
C 13 61 6098 25.94 861 865 201.8
D 1 52 3480366 17479.88 817 791 199.1
D 7 38 701993 3522.54 817 791 199.1
D 14 35 108040 538.77 817 791 199.1

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