ASTROSAT CZTI

Data Quality Report

Orbit 24644

Creation date: 2024-06-27T19:08:16.699107
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/AS1C05_012T06_9000003616_24644cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24644cztM0_level2_quad_clean.evt
Size (bytes)919,249,920240,243,840
Size876.7 MB 229.1 MB
Events in quadrant A5,875,1111,618,065
Events in quadrant B6,158,6921,640,515
Events in quadrant C8,046,0781,572,281
Events in quadrant D6,883,1011,550,916

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263243
B0269843
C0325214
D0293403

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12957460.355020%
B12958990.764007%
C129571871.443235%
D129571881.450953%

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 14702 12960 3 3 0.02% 0.02%
B 14703 12961 7 7 0.05% 0.05%
C 14702 12960 13 13 0.09% 0.10%
D 14702 12960 113 113 0.77% 0.87%

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 13 254 20696 62.92 1519 1482 305.4
A 3 137 14054 41.17 1519 1482 305.4
A 0 226 12908 37.42 1519 1482 305.4
B 15 32 74352 251.62 1515 1472 289.6
B 5 172 59634 200.8 1515 1472 289.6
B 12 111 36236 120.02 1515 1472 289.6
C 7 247 1594585 4694.37 1460 1469 339.4
C 10 91 454408 1334.66 1460 1469 339.4
C 14 238 233940 685.01 1460 1469 339.4
D 8 195 456312 1276.95 1473 1432 356.2
D 1 52 441522 1235.43 1473 1432 356.2
D 7 238 214297 597.56 1473 1432 356.2

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