ASTROSAT CZTI

Data Quality Report

Orbit 41900

Creation date: 2024-06-27T22:34:10.763834
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_099T01_9000005716_41900cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41900cztM0_level2_quad_clean.evt
Size (bytes)533,666,880106,061,760
Size508.9 MB 101.1 MB
Events in quadrant A8,020,281674,342
Events in quadrant B3,270,881745,431
Events in quadrant C3,761,246681,814
Events in quadrant D4,185,576645,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282482
B0143682
C0153952
D0171802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A666268710.312219%
B6663280.420231%
C66632674.007204%
D66631852.776527%

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 9348 6664 796 796 8.52% 11.94%
B 9349 6665 11 11 0.12% 0.17%
C 9349 6665 258 258 2.76% 3.87%
D 9349 6665 153 153 1.64% 2.30%

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 6 10 4208606 29031.02 702 688 144.9
A 10 83 600437 4137.75 702 688 144.9
A 14 24 473827 3264.25 702 688 144.9
B 5 255 352650 2524.39 719 699 139.4
B 0 190 70159 498.21 719 699 139.4
B 12 111 18283 126.12 719 699 139.4
C 0 10 797092 4919.28 686 688 161.9
C 15 214 257272 1584.89 686 688 161.9
C 0 15 30844 186.27 686 688 161.9
D 12 79 417966 2440.86 697 675 171.0
D 5 222 394625 2304.33 697 675 171.0
D 12 6 302601 1766.06 697 675 171.0

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