ASTROSAT CZTI

Data Quality Report

Orbit 19810

Creation date: 2024-06-27T18:07:22.007056
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/AS1C04_009T06_9000002960_19810cztM0_level2.evt modeM0/AS1C04_009T06_9000002960_19810cztM0_level2_quad_clean.evt
Size (bytes)1,066,392,000226,788,480
Size1017.0 MB 216.3 MB
Events in quadrant A5,683,4551,555,474
Events in quadrant B8,471,8661,546,851
Events in quadrant C5,781,3281,510,859
Events in quadrant D11,513,4181,389,791

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254303
B0334493
C0254323
D0428963

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12525820.654691%
B125254833.856287%
C125251281.021956%
D12525145311.600798%

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 14125 12526 1 1 0.01% 0.01%
B 14125 12527 347 347 2.46% 2.77%
C 14125 12527 3 3 0.02% 0.02%
D 14125 12526 1218 1218 8.62% 9.72%

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 0 226 13008 39.06 1469 1436 296.3
A 3 137 11498 33.96 1469 1436 296.3
A 4 2 10778 31.53 1469 1436 296.3
B 10 245 2351229 8543.45 1451 1411 275.0
B 7 220 161329 581.43 1451 1411 275.0
B 4 216 100911 361.76 1451 1411 275.0
C 14 238 220516 668.58 1407 1414 327.7
C 3 233 48608 144.01 1407 1414 327.7
C 0 207 29410 85.43 1407 1414 327.7
D 1 52 3060720 9252.8 1364 1322 330.6
D 7 38 1111425 3357.38 1364 1322 330.6
D 2 69 777798 2348.36 1364 1322 330.6

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