ASTROSAT CZTI

Data Quality Report

Orbit 19135

Creation date: 2024-06-27T17:59:24.342920
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/AS1A05_046T01_9000002838_19135cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19135cztM0_level2_quad_clean.evt
Size (bytes)477,374,400108,388,800
Size455.3 MB 103.4 MB
Events in quadrant A3,153,547715,375
Events in quadrant B3,380,589743,361
Events in quadrant C3,257,645714,939
Events in quadrant D4,242,965674,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132282
B0138692
C0134632
D0166532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227460.738718%
B6227961.541673%
C6227831.332905%
D62272413.870242%

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 7537 6228 0 0 0.00% 0.00%
B 7537 6228 3 3 0.04% 0.05%
C 7537 6228 0 0 0.00% 0.00%
D 7537 6228 124 124 1.65% 1.99%

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 0 226 7059 38.42 817 802 162.9
A 13 254 6102 32.54 817 802 162.9
A 3 137 5887 31.22 817 802 162.9
B 3 112 45056 283.84 829 809 155.9
B 7 220 37008 232.21 829 809 155.9
B 0 197 25958 161.33 829 809 155.9
C 14 238 125900 671.53 802 812 186.3
C 13 61 5753 26.53 802 812 186.3
C 0 207 2793 10.63 802 812 186.3
D 1 52 720771 3785.91 789 768 190.2
D 1 20 481073 2525.53 789 768 190.2
D 11 176 38111 196.36 789 768 190.2

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