ASTROSAT CZTI

Data Quality Report

Orbit 35508

Creation date: 2022-04-23T07:13:38.559366
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/AS1A11_097T07_9000005084_35508cztM0_level2.evt modeM0/AS1A11_097T07_9000005084_35508cztM0_level2_quad_clean.evt
Size (bytes)393,816,96061,588,800
Size375.6 MB 58.7 MB
Events in quadrant A2,477,935392,059
Events in quadrant B2,835,423401,361
Events in quadrant C3,239,545373,952
Events in quadrant D3,045,128358,067

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102383
B0113352
C0126112
D0121772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A483670.144748%
B4836831.716294%
C48361964.052936%
D48361132.336642%

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 6928 4837 1 1 0.01% 0.02%
B 6928 4837 54 54 0.78% 1.12%
C 6928 4837 136 136 1.96% 2.81%
D 6928 4837 94 94 1.36% 1.94%

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 124315 1026.34 600 590 120.5
A 15 169 24739 200.32 600 590 120.5
A 13 6 7598 58.13 600 590 120.5
B 5 172 237067 2081.21 600 586 113.6
B 5 236 135420 1186.64 600 586 113.6
B 4 232 32854 283.98 600 586 113.6
C 0 10 511069 3843.19 573 578 132.8
C 15 214 197239 1480.55 573 578 132.8
C 0 207 110273 825.83 573 578 132.8
D 7 80 437674 3116.9 571 557 140.2
D 10 118 132922 943.84 571 557 140.2
D 12 6 111596 791.77 571 557 140.2

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