ASTROSAT CZTI

Data Quality Report

Orbit 35079

Creation date: 2022-03-25T08:21:59.159674
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/AS1T05_015T01_9000005026_35079cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35079cztM0_level2_quad_clean.evt
Size (bytes)629,265,60074,272,320
Size600.1 MB 70.8 MB
Events in quadrant A2,782,307477,227
Events in quadrant B3,902,283480,550
Events in quadrant C3,312,430486,497
Events in quadrant D8,655,702386,020

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122723
B0156012
C0136552
D0299622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5985110.183793%
B59851752.923977%
C5985340.568087%
D5985147124.578112%

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 7266 5986 2 2 0.03% 0.03%
B 7266 5986 98 98 1.35% 1.64%
C 7266 5986 17 17 0.23% 0.28%
D 7266 5986 1271 1271 17.49% 21.23%

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 10 83 82885 595.58 684 670 138.0
A 15 17 17107 119.07 684 670 138.0
A 7 16 16372 113.75 684 670 138.0
B 5 172 926941 7165.37 675 658 129.3
B 0 189 235049 1813.16 675 658 129.3
B 4 232 39834 303.05 675 658 129.3
C 10 49 316828 2053.54 666 670 154.0
C 15 214 249471 1616.04 666 670 154.0
C 0 10 70423 453.07 666 670 154.0
D 8 195 3819573 26387.92 588 572 144.7
D 2 250 2130093 14714.22 588 572 144.7
D 13 249 281679 1942.35 588 572 144.7

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