ASTROSAT CZTI

Data Quality Report

Orbit 07874

Creation date: 2024-06-27T15:25:07.079042
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/AS1A02_071T01_9000001078_07874cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07874cztM0_level2_quad_clean.evt
Size (bytes)462,942,72092,960,640
Size441.5 MB 88.7 MB
Events in quadrant A3,164,932592,092
Events in quadrant B3,137,367616,646
Events in quadrant C4,190,574598,941
Events in quadrant D3,100,796568,942

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135512
B0134761
C0167891
D0135881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6283340.541143%
B6283661.050454%
C6283410.652555%
D6283390.620723%

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 7563 6284 8 8 0.11% 0.13%
B 7563 6284 8 8 0.11% 0.13%
C 7563 6284 2 2 0.03% 0.03%
D 7563 6284 28 28 0.37% 0.45%

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 15 239 143070 945.81 745 730 150.5
A 2 79 125946 832.03 745 730 150.5
A 15 223 14469 91.29 745 730 150.5
B 4 239 125757 873.17 761 745 143.2
B 11 51 21877 147.6 761 745 143.2
B 10 16 20211 135.96 761 745 143.2
C 1 16 1240767 7183.96 746 752 172.6
C 8 229 18230 101.26 746 752 172.6
C 10 22 13368 73.09 746 752 172.6
D 1 52 104407 578.71 736 714 179.2
D 2 14 90341 500.21 736 714 179.2
D 14 34 53790 296.22 736 714 179.2

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