ASTROSAT CZTI

Data Quality Report

Orbit 41012

Creation date: 2024-06-27T22:23:15.674908
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_029T02_9000005590_41012cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41012cztM0_level2_quad_clean.evt
Size (bytes)321,624,00086,304,960
Size306.7 MB 82.3 MB
Events in quadrant A2,699,622590,496
Events in quadrant B2,256,431604,991
Events in quadrant C3,210,077559,394
Events in quadrant D3,358,415516,086

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110333
B0100172
C0125592
D0134062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4887120.245549%
B4887100.204625%
C48872224.542664%
D48872455.013301%

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 7010 4888 4 4 0.06% 0.08%
B 7010 4888 3 3 0.04% 0.06%
C 7010 4888 200 200 2.85% 4.09%
D 7010 4888 224 224 3.20% 4.58%

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 490541 4275.39 561 549 114.6
A 12 189 31137 266.89 561 549 114.6
A 13 254 8185 66.62 561 549 114.6
B 0 186 35994 329.23 559 545 107.7
B 5 252 18886 170.34 559 545 107.7
B 12 111 13325 118.69 559 545 107.7
C 14 254 691874 5484.37 544 548 126.1
C 15 214 208397 1648.89 544 548 126.1
C 0 10 126425 998.6 544 548 126.1
D 13 249 400646 3041.73 544 530 131.5
D 2 249 269613 2045.6 544 530 131.5
D 12 79 235082 1783.09 544 530 131.5

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