ASTROSAT CZTI

Data Quality Report

Orbit 42469

Creation date: 2024-06-27T22:40:32.894238
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/AS1C07_001T10_9000005806_42469cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42469cztM0_level2_quad_clean.evt
Size (bytes)434,145,600109,909,440
Size414.0 MB 104.8 MB
Events in quadrant A3,745,178737,590
Events in quadrant B3,150,593743,060
Events in quadrant C3,800,396724,073
Events in quadrant D4,841,693645,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155032
B0143102
C0158992
D0193112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6855280.408461%
B6855250.364697%
C6855200.291758%
D68554035.878920%

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 9959 6857 21 21 0.21% 0.31%
B 9959 6857 13 13 0.13% 0.19%
C 9959 6857 15 15 0.15% 0.22%
D 9959 6857 312 312 3.13% 4.55%

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 692335 4554.9 740 724 151.8
A 12 189 79682 520.01 740 724 151.8
A 7 16 78772 514.02 740 724 151.8
B 0 186 89015 623.54 730 709 141.6
B 0 230 42663 296.24 730 709 141.6
B 5 255 41799 290.14 730 709 141.6
C 10 34 559935 3326.62 719 724 168.1
C 15 214 286409 1699.47 719 724 168.1
C 14 254 122311 723.29 719 724 168.1
D 1 52 587272 3342.02 710 689 175.5
D 12 6 510200 2902.91 710 689 175.5
D 12 233 266669 1515.4 710 689 175.5

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