ASTROSAT CZTI

Data Quality Report

Orbit 24259

Creation date: 2024-06-27T19:04:02.913841
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/AS1A07_118T01_9000003586_24259cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24259cztM0_level2_quad_clean.evt
Size (bytes)526,838,400115,018,560
Size502.4 MB 109.7 MB
Events in quadrant A3,255,626769,935
Events in quadrant B3,447,511800,984
Events in quadrant C3,483,353764,452
Events in quadrant D5,351,008717,661

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134892
B0141173
C0141542
D0202842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6173430.696582%
B6172871.409592%
C61721332.154893%
D61723195.168503%

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 7508 6173 0 0 0.00% 0.00%
B 7507 6172 6 6 0.08% 0.10%
C 7507 6173 26 26 0.35% 0.42%
D 7507 6172 248 248 3.30% 4.02%

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 13 254 9727 53.09 845 829 167.6
A 0 226 7437 39.43 845 829 167.6
A 3 137 6923 36.36 845 829 167.6
B 0 245 44149 271.67 855 835 159.4
B 0 230 27583 167.76 855 835 159.4
B 12 111 18082 108.17 855 835 159.4
C 14 238 132585 684.71 828 836 192.4
C 3 233 64490 330.82 828 836 192.4
C 2 16 31996 161.94 828 836 192.4
D 8 195 874007 4418.83 818 799 197.6
D 1 52 555274 2805.9 818 799 197.6
D 12 32 273849 1381.76 818 799 197.6

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