ASTROSAT CZTI

Data Quality Report

Orbit 40508

Creation date: 2024-06-27T22:16:58.823718
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/AS1A12_097T02_9000005542_40508cztM0_level2.fits modeM0/AS1A12_097T02_9000005542_40508cztM0_level2_quad_clean.evt
Size (bytes)381,945,60087,946,560
Size364.3 MB 83.9 MB
Events in quadrant A3,056,882622,710
Events in quadrant B4,071,559617,447
Events in quadrant C3,250,985595,140
Events in quadrant D3,321,101435,012

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125193
B0158092
C0131852
D0136272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5608270.481455%
B56082454.368759%
C56081652.942225%
D5608150126.765335%

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 7101 5609 9 9 0.13% 0.16%
B 7101 5609 195 195 2.75% 3.48%
C 7101 5609 139 139 1.96% 2.48%
D 7101 5609 138 138 1.94% 2.46%

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 540187 4260.12 610 597 126.7
A 2 79 109411 859.1 610 597 126.7
A 12 189 31400 243.19 610 597 126.7
B 3 112 714934 6092.4 601 585 117.3
B 5 32 358731 3054.49 601 585 117.3
B 4 170 278526 2370.45 601 585 117.3
C 14 254 641282 4563.08 592 596 140.4
C 15 214 242810 1725.09 592 596 140.4
C 0 10 28573 199.26 592 596 140.4
D 12 191 296600 2242.53 522 506 132.0
D 2 250 289403 2188.03 522 506 132.0
D 12 227 217067 1640.17 522 506 132.0

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