ASTROSAT CZTI

Data Quality Report

Orbit 40173

Creation date: 2024-06-27T22:13:07.212228
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_032T04_9000005528_40173cztM0_level2.fits modeM0/AS1A12_032T04_9000005528_40173cztM0_level2_quad_clean.evt
Size (bytes)478,016,64076,933,440
Size455.9 MB 73.4 MB
Events in quadrant A2,554,101573,065
Events in quadrant B2,526,677584,704
Events in quadrant C8,916,669329,382
Events in quadrant D3,311,380494,394

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106703
B0110242
C0299192
D0133582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495870.141186%
B49581192.400161%
C4958237647.922549%
D49582765.566761%

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 7021 4959 5 5 0.07% 0.10%
B 7021 4959 70 70 1.00% 1.41%
C 7021 4959 2420 2420 34.47% 48.80%
D 7021 4959 283 283 4.03% 5.71%

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 441497 4024.45 537 527 109.6
A 2 79 16536 146.1 537 527 109.6
A 7 3 11885 103.66 537 527 109.6
B 5 255 199132 1936.2 535 521 102.6
B 5 172 154396 1500.08 535 521 102.6
B 4 171 46811 451.27 535 521 102.6
C 9 187 6994846 69853.85 430 433 100.1
C 15 214 172389 1717.34 430 433 100.1
C 0 10 36097 356.18 430 433 100.1
D 12 227 985190 7862.7 517 503 125.2
D 13 249 126262 1004.18 517 503 125.2
D 9 19 69457 550.6 517 503 125.2

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