ASTROSAT CZTI

Data Quality Report

Orbit 19873

Creation date: 2024-06-27T18:08:09.335652
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_118T01_9000002962_19873cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19873cztM0_level2_quad_clean.evt
Size (bytes)489,263,040103,055,040
Size466.6 MB 98.3 MB
Events in quadrant A3,551,146678,612
Events in quadrant B3,519,630694,228
Events in quadrant C3,520,851662,830
Events in quadrant D3,789,698637,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145182
B0145392
C0144432
D0152902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6422831.292432%
B64231251.946131%
C64231392.164098%
D64231802.802429%

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 9062 6424 4 4 0.04% 0.06%
B 9063 6424 6 6 0.07% 0.09%
C 9063 6424 4 4 0.04% 0.06%
D 9063 6424 113 113 1.25% 1.76%

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 14 238 120527 673.75 885 869 177.6
A 12 16 14956 79.32 885 869 177.6
A 11 29 12833 67.36 885 869 177.6
B 12 111 19416 111.26 889 868 166.7
B 11 111 17341 98.81 889 868 166.7
B 14 111 15088 85.3 889 868 166.7
C 14 238 136304 673.13 863 870 201.2
C 9 221 20717 98.64 863 870 201.2
C 13 61 5822 24.61 863 870 201.2
D 1 52 355491 1714.46 862 842 206.9
D 7 238 108246 519.22 862 842 206.9
D 7 96 47569 225.89 862 842 206.9

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