ASTROSAT CZTI

Data Quality Report

Orbit 23192

Creation date: 2024-06-27T18:51:07.606594
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_175T01_9000003428_23192cztM0_level2.evt modeM0/AS1T03_175T01_9000003428_23192cztM0_level2_quad_clean.evt
Size (bytes)557,472,960102,582,720
Size531.6 MB 97.8 MB
Events in quadrant A3,412,600662,975
Events in quadrant B3,479,412675,096
Events in quadrant C3,872,474654,823
Events in quadrant D5,629,951612,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149462
B0150183
C0160932
D0216572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7203390.541441%
B7203831.152298%
C72031662.304595%
D72036358.815771%

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 7683 7204 1 1 0.01% 0.01%
B 7683 7204 0 0 0.00% 0.00%
C 7683 7204 25 25 0.33% 0.35%
D 7683 7204 447 447 5.82% 6.20%

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 6 16 18092 96.25 880 861 179.0
A 13 254 11793 61.06 880 861 179.0
A 3 137 8039 40.09 880 861 179.0
B 12 111 20848 117.45 882 858 170.2
B 11 111 18622 104.37 882 858 170.2
B 14 111 16425 91.46 882 858 170.2
C 0 10 344908 1715.72 850 856 200.5
C 14 238 132705 657.5 850 856 200.5
C 7 247 66337 326.54 850 856 200.5
D 1 52 1084198 5318.93 833 808 203.7
D 9 1 717412 3518.19 833 808 203.7
D 7 238 243508 1191.54 833 808 203.7

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