ASTROSAT CZTI

Data Quality Report

Orbit 36897

Creation date: 2024-06-27T21:32:57.989907
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/AS1C07_010T01_9000005246_36897cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36897cztM0_level2_quad_clean.evt
Size (bytes)326,255,04073,644,480
Size311.1 MB 70.2 MB
Events in quadrant A2,907,693621,152
Events in quadrant B825,5598,686
Events in quadrant C2,921,008622,812
Events in quadrant D2,847,622592,062

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119233
B055342
C0117282
D0119882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5472200.365497%
B54725472100.000000%
C5472280.511696%
D5472290.529971%

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 9359 5474 9 9 0.10% 0.16%
B 9358 5471 0 0 0.00% 0.00%
C 9359 5474 16 16 0.17% 0.29%
D 9359 5474 26 26 0.28% 0.47%

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 225637 1680.05 666 655 133.9
A 9 143 78183 578.94 666 655 133.9
A 13 6 32258 236.0 666 655 133.9
B 12 243 760668 192338.4 11 11 4.0
B 12 144 13808 3488.69 11 11 4.0
B 5 255 1845 463.74 11 11 4.0
C 15 214 233535 1521.26 660 666 153.1
C 0 10 109563 711.39 660 666 153.1
C 1 157 6974 41.21 660 666 153.1
D 12 233 63570 393.48 657 641 159.9
D 13 249 63275 391.64 657 641 159.9
D 2 153 58804 363.68 657 641 159.9

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