ASTROSAT CZTI

Data Quality Report

Orbit 31077

Creation date: 2024-06-27T20:23:05.724511
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/AS1A10_109T01_9000004492_31077cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31077cztM0_level2_quad_clean.evt
Size (bytes)583,819,200109,270,080
Size556.8 MB 104.2 MB
Events in quadrant A3,623,155735,491
Events in quadrant B5,452,284728,934
Events in quadrant C3,931,073714,734
Events in quadrant D4,253,723695,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148803
B0199742
C0159782
D0170422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227831.332905%
B62272263.629356%
C62272934.705316%
D6227821.316846%

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 7557 6228 2 2 0.03% 0.03%
B 7557 6228 37 37 0.49% 0.59%
C 7557 6228 38 38 0.50% 0.61%
D 7557 6228 9 9 0.12% 0.14%

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 13 170 74750 409.97 915 903 180.1
A 12 96 17621 92.81 915 903 180.1
A 13 254 11435 58.47 915 903 180.1
B 6 159 1691578 10214.21 897 879 165.5
B 0 229 200913 1208.49 897 879 165.5
B 12 111 19232 110.88 897 879 165.5
C 0 10 225898 1104.44 882 891 203.7
C 14 238 144938 707.05 882 891 203.7
C 10 22 81630 396.3 882 891 203.7
D 8 195 684487 3277.29 895 878 208.6
D 13 174 145972 695.6 895 878 208.6
D 2 250 32441 151.32 895 878 208.6

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