ASTROSAT CZTI

Data Quality Report

Orbit 11233

Creation date: 2024-06-27T16:10:06.316257
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/AS1T01_200T01_9000001638_11233cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11233cztM0_level2_quad_clean.evt
Size (bytes)640,416,960124,110,720
Size610.7 MB 118.4 MB
Events in quadrant A5,544,701801,659
Events in quadrant B3,674,359861,112
Events in quadrant C3,647,869856,050
Events in quadrant D6,069,802767,741

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210823
B0155992
C0156842
D0225802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67686249.219858%
B67682413.560875%
C67682413.560875%
D676881912.101064%

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 9183 6770 397 397 4.32% 5.86%
B 9183 6770 49 49 0.53% 0.72%
C 9183 6770 110 110 1.20% 1.62%
D 9183 6770 588 588 6.40% 8.69%

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 14 238 1450299 9586.44 752 736 151.2
A 8 5 749336 4950.74 752 736 151.2
A 15 174 267213 1762.3 752 736 151.2
B 4 239 474704 3252.05 782 761 145.7
B 10 244 49213 332.46 782 761 145.7
B 0 214 22568 149.63 782 761 145.7
C 4 254 656755 3751.52 761 763 174.9
C 1 3 12387 66.48 761 763 174.9
C 4 238 6322 31.79 761 763 174.9
D 1 52 1180937 6905.03 718 698 170.9
D 8 195 791245 4625.12 718 698 170.9
D 2 14 479372 2800.5 718 698 170.9

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