ASTROSAT CZTI

Data Quality Report

Orbit 40941

Creation date: 2024-06-27T22:22:30.143525
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_052T04_9000005582_40941cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40941cztM0_level2_quad_clean.evt
Size (bytes)326,566,08081,391,680
Size311.4 MB 77.6 MB
Events in quadrant A2,552,412562,720
Events in quadrant B2,577,644569,505
Events in quadrant C2,493,827526,501
Events in quadrant D4,079,530459,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106233
B0108362
C0105492
D0156712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4939100.202470%
B493960.121482%
C4939641.295809%
D493949610.042519%

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 6941 4940 3 3 0.04% 0.06%
B 6941 4940 0 0 0.00% 0.00%
C 6941 4940 56 56 0.81% 1.13%
D 6941 4940 426 426 6.14% 8.62%

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 465298 4268.24 533 521 108.9
A 2 79 16440 146.19 533 521 108.9
A 13 6 7847 67.27 533 521 108.9
B 0 229 449803 4354.86 529 514 103.2
B 5 255 31153 296.98 529 514 103.2
B 12 111 12747 118.57 529 514 103.2
C 15 214 229373 1884.93 520 522 121.4
C 0 10 182872 1501.93 520 522 121.4
C 9 54 35010 284.06 520 522 121.4
D 13 249 1263409 10327.41 501 486 122.3
D 2 249 651523 5323.78 501 486 122.3
D 12 6 62183 504.52 501 486 122.3

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