ASTROSAT CZTI

Data Quality Report

Orbit 42425

Creation date: 2024-06-27T22:39:53.964097
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_101T04_9000005804_42425cztM0_level2.fits modeM0/AS1A12_101T04_9000005804_42425cztM0_level2_quad_clean.evt
Size (bytes)930,208,320246,850,560
Size887.1 MB 235.4 MB
Events in quadrant A8,058,6531,665,007
Events in quadrant B6,878,0311,705,156
Events in quadrant C7,436,9431,586,614
Events in quadrant D10,858,9191,447,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332444
B0318385
C0323254
D0433534

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0530
C0530
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15499310.200013%
B15498320.206478%
C154981320.851723%
D154985493.542393%

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 19797 15502 13 13 0.07% 0.08%
B 19796 15501 8 8 0.04% 0.05%
C 19796 15501 81 81 0.41% 0.52%
D 19796 15501 485 485 2.45% 3.13%

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 1311134 3816.07 1695 1663 343.1
A 7 3 123181 354.13 1695 1663 343.1
A 14 223 27298 74.71 1695 1663 343.1
B 0 229 110519 337.62 1674 1627 322.5
B 5 172 101733 310.37 1674 1627 322.5
B 5 255 55735 167.76 1674 1627 322.5
C 15 214 637968 1674.94 1631 1643 379.9
C 14 254 312551 818.37 1631 1643 379.9
C 15 111 62907 161.26 1631 1643 379.9
D 12 33 2454255 6217.98 1618 1570 394.5
D 12 6 1403993 3555.39 1618 1570 394.5
D 13 249 308121 777.16 1618 1570 394.5

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