ASTROSAT CZTI

Data Quality Report

Orbit 26219

Creation date: 2024-06-27T19:26:15.356878
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/AS1C05_019T04_9000003788_26219cztM0_level2.evt modeM0/AS1C05_019T04_9000003788_26219cztM0_level2_quad_clean.evt
Size (bytes)514,290,240143,360,640
Size490.5 MB 136.7 MB
Events in quadrant A3,576,870970,090
Events in quadrant B3,739,259981,482
Events in quadrant C3,576,770937,044
Events in quadrant D4,163,066921,800

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156930
B0161050
C0156740
D0175900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76431662.171922%
B76442072.708006%
C76442102.747253%
D76443444.500262%

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 7823 7645 0 0 0.00% 0.00%
B 7824 7646 24 24 0.31% 0.31%
C 7824 7646 0 0 0.00% 0.00%
D 7824 7646 161 161 2.06% 2.11%

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 12287 60.88 923 902 187.0
A 0 13 9186 44.3 923 902 187.0
A 3 137 8408 40.14 923 902 187.0
B 5 172 110982 626.51 912 887 175.7
B 0 190 34477 191.15 912 887 175.7
B 0 230 27835 153.35 912 887 175.7
C 14 238 139225 671.07 879 884 206.2
C 3 233 11028 49.21 879 884 206.2
C 13 61 5954 24.59 879 884 206.2
D 1 52 555083 2596.37 889 865 213.5
D 7 38 126562 588.86 889 865 213.5
D 13 174 54262 250.15 889 865 213.5

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