ASTROSAT CZTI

Data Quality Report

Orbit 45489

Creation date: 2024-06-27T23:12:48.976216
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/AS1A13_054T01_9000006098_45489cztM0_level2.fits modeM0/AS1A13_054T01_9000006098_45489cztM0_level2_quad_clean.evt
Size (bytes)528,166,080108,881,280
Size503.7 MB 103.8 MB
Events in quadrant A5,720,654733,702
Events in quadrant B4,356,968699,336
Events in quadrant C3,318,735752,632
Events in quadrant D5,665,997671,604

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216402
B0170932
C0141022
D0214072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63033024.791369%
B630276012.059664%
C63021101.745478%
D63022744.347826%

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 7523 6304 53 53 0.70% 0.84%
B 7522 6303 355 355 4.72% 5.63%
C 7522 6303 56 56 0.74% 0.89%
D 7522 6303 185 185 2.46% 2.94%

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 2672476 17154.69 754 740 155.7
A 13 248 53726 340.21 754 740 155.7
A 9 191 33676 211.48 754 740 155.7
B 15 201 1453662 10674.49 699 681 136.1
B 5 172 60872 442.2 699 681 136.1
B 0 199 27417 196.42 699 681 136.1
C 14 254 328836 1842.42 754 758 178.1
C 2 14 31944 175.13 754 758 178.1
C 3 233 17149 92.05 754 758 178.1
D 11 241 1784884 9498.14 744 723 187.8
D 1 52 432488 2298.54 744 723 187.8
D 5 222 134289 711.05 744 723 187.8

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