ASTROSAT CZTI

Data Quality Report

Orbit 12262

Creation date: 2024-06-27T16:24:39.751825
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/AS1G08_064T01_9000001814_12262cztM0_level2.evt modeM0/AS1G08_064T01_9000001814_12262cztM0_level2_quad_clean.evt
Size (bytes)690,819,84068,921,280
Size658.8 MB 65.7 MB
Events in quadrant A7,836,367382,463
Events in quadrant B4,628,228414,350
Events in quadrant C3,220,563422,494
Events in quadrant D4,779,807396,005

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280162
B0180921
C0139711
D0185711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6754135120.002961%
B67543995.907610%
C6754821.214095%
D67542814.160497%

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 7615 6756 900 900 11.82% 13.32%
B 7615 6756 176 176 2.31% 2.61%
C 7615 6756 6 6 0.08% 0.09%
D 7615 6756 209 209 2.74% 3.09%

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 8 15 2406112 15233.76 776 763 157.9
A 14 237 1220596 7725.55 776 763 157.9
A 13 251 771114 4878.85 776 763 157.9
B 4 239 947898 6218.86 807 789 152.3
B 4 206 243442 1593.3 807 789 152.3
B 3 64 92373 601.35 807 789 152.3
C 4 175 43780 233.01 800 804 184.4
C 15 208 26008 136.65 800 804 184.4
C 0 207 23737 124.34 800 804 184.4
D 12 221 988813 5142.59 794 770 192.1
D 1 52 447732 2326.36 794 770 192.1
D 10 199 123536 638.98 794 770 192.1

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