ASTROSAT CZTI

Data Quality Report

Orbit 44140

Creation date: 2024-06-27T22:59:40.475544
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/AS1A13_012T02_9000005950_44140cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44140cztM0_level2_quad_clean.evt
Size (bytes)433,808,640105,981,120
Size413.7 MB 101.1 MB
Events in quadrant A4,993,406702,058
Events in quadrant B3,306,324740,218
Events in quadrant C2,992,480714,197
Events in quadrant D4,306,436640,008

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192071
B0135491
C0127801
D0167971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59163445.814740%
B59171502.535068%
C59171011.706946%
D59162353.972279%

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 7146 5917 170 170 2.38% 2.87%
B 7147 5918 36 36 0.50% 0.61%
C 7147 5918 15 15 0.21% 0.25%
D 7146 5917 137 137 1.92% 2.32%

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 1230441 8431.51 715 703 145.9
A 14 238 935713 6410.75 715 703 145.9
A 7 3 22897 152.17 715 703 145.9
B 5 235 253274 1789.09 722 701 141.2
B 0 189 101058 710.87 722 701 141.2
B 5 172 30610 211.86 722 701 141.2
C 14 254 105072 624.04 718 724 167.2
C 5 4 35051 205.28 718 724 167.2
C 14 96 31013 181.14 718 724 167.2
D 1 47 913928 5109.76 705 684 178.7
D 2 249 226522 1263.6 705 684 178.7
D 1 52 140818 784.08 705 684 178.7

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