ASTROSAT CZTI

Data Quality Report

Orbit 34207

Creation date: 2022-01-25T09:57:26.883501
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/AS1T04_086T01_9000004884_34207cztM0_level2.evt modeM0/AS1T04_086T01_9000004884_34207cztM0_level2_quad_clean.evt
Size (bytes)707,855,04057,049,920
Size675.1 MB 54.4 MB
Events in quadrant A2,455,654377,261
Events in quadrant B8,727,241290,032
Events in quadrant C2,794,798389,669
Events in quadrant D7,120,892316,805

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103403
B0293852
C0110232
D0246252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A502760.119355%
B5027231746.091108%
C5027841.670977%
D5027122324.328625%

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 7089 5028 1 1 0.01% 0.02%
B 7089 5028 1903 1903 26.84% 37.85%
C 7089 5028 55 55 0.78% 1.09%
D 7089 5028 1107 1107 15.62% 22.02%

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 15 169 63021 514.8 609 598 121.3
A 10 83 22270 178.73 609 598 121.3
A 13 254 9576 74.04 609 598 121.3
B 5 31 3878351 39142.47 517 506 99.1
B 5 15 1988111 20062.63 517 506 99.1
B 5 172 341694 3443.91 517 506 99.1
C 15 214 232962 1702.58 593 599 136.5
C 0 10 224387 1639.75 593 599 136.5
C 9 187 10635 73.54 593 599 136.5
D 10 118 1550509 11825.02 538 524 131.1
D 12 217 1120286 8542.8 538 524 131.1
D 8 195 1083337 8260.91 538 524 131.1

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