ASTROSAT CZTI

Data Quality Report

Orbit 45841

Creation date: 2024-06-27T23:16:47.911280
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_186T01_9000006130_45841cztM0_level2.fits modeM0/AS1T05_186T01_9000006130_45841cztM0_level2_quad_clean.evt
Size (bytes)817,899,840106,217,280
Size780.0 MB 101.3 MB
Events in quadrant A6,510,343765,814
Events in quadrant B10,800,729575,725
Events in quadrant C3,184,850775,943
Events in quadrant D9,223,445596,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235200
B0371320
C0148910
D0324720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72111912.648731%
B7212246934.234609%
C7212120.166389%
D7211136118.873943%

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 7211 7211 81 81 1.12% 1.12%
B 7212 7212 1677 1677 23.25% 23.25%
C 7212 7212 0 0 0.00% 0.00%
D 7211 7211 1134 1134 15.73% 15.73%

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 2932759 16823.21 828 809 174.3
A 15 14 263624 1508.0 828 809 174.3
A 14 235 34526 193.46 828 809 174.3
B 3 112 7558327 51658.07 732 707 146.3
B 5 172 92508 627.48 732 707 146.3
B 4 158 62860 424.83 732 707 146.3
C 2 14 6233 27.82 815 818 194.7
C 13 61 5443 23.76 815 818 194.7
C 3 233 3840 15.53 815 818 194.7
D 12 2 2440335 12707.18 757 735 192.0
D 1 52 1340841 6980.23 757 735 192.0
D 11 241 1091231 5680.08 757 735 192.0

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