ASTROSAT CZTI

Data Quality Report

Orbit 40810

Creation date: 2024-06-27T22:20:48.590487
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_099T03_9000005570_40810cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40810cztM0_level2_quad_clean.evt
Size (bytes)304,007,04090,126,720
Size289.9 MB 86.0 MB
Events in quadrant A2,891,094607,802
Events in quadrant B2,600,125632,148
Events in quadrant C2,650,196585,240
Events in quadrant D2,703,608537,278

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115783
B0111212
C0109892
D0118192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5237160.305518%
B5237200.381898%
C5237300.572847%
D5237510.973840%

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 7330 5238 5 5 0.07% 0.10%
B 7330 5238 9 9 0.12% 0.17%
C 7330 5238 28 28 0.38% 0.53%
D 7330 5238 44 44 0.60% 0.84%

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 502192 4095.46 595 584 122.5
A 13 248 47260 381.09 595 584 122.5
A 2 79 24401 194.46 595 584 122.5
B 5 255 175220 1521.92 594 579 114.8
B 15 35 36375 311.95 594 579 114.8
B 0 190 18390 155.21 594 579 114.8
C 15 214 226364 1674.25 579 582 134.9
C 0 10 118700 875.88 579 582 134.9
C 14 254 41257 301.62 579 582 134.9
D 5 222 165811 1165.94 575 558 141.7
D 1 47 122663 861.51 575 558 141.7
D 2 249 58574 409.33 575 558 141.7

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