ASTROSAT CZTI

Data Quality Report

Orbit 11478

Creation date: 2024-06-27T16:13:31.540443
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/AS1A04_021T04_9000001682_11478cztM0_level2.evt modeM0/AS1A04_021T04_9000001682_11478cztM0_level2_quad_clean.evt
Size (bytes)695,128,320107,438,400
Size662.9 MB 102.5 MB
Events in quadrant A7,960,700654,877
Events in quadrant B5,416,996707,885
Events in quadrant C2,991,840766,082
Events in quadrant D4,270,374698,218

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279152
B0202471
C0126151
D0165991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6107151624.823972%
B610770311.511380%
C6107320.523989%
D61074056.631734%

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 7448 6109 1096 1096 14.72% 17.94%
B 7448 6109 391 391 5.25% 6.40%
C 7448 6109 0 0 0.00% 0.00%
D 7448 6109 272 272 3.65% 4.45%

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 8 5 5083587 34881.94 721 707 145.7
A 1 162 20024 132.57 721 707 145.7
A 15 174 17383 114.44 721 707 145.7
B 4 81 1203919 8574.7 745 728 140.3
B 4 239 786764 5601.79 745 728 140.3
B 3 64 319778 2273.75 745 728 140.3
C 13 61 5596 27.23 765 770 177.2
C 0 207 4703 22.19 765 770 177.2
C 14 234 3613 16.04 765 770 177.2
D 1 52 750618 4224.45 747 730 177.5
D 10 253 211663 1188.28 747 730 177.5
D 2 120 178886 1003.63 747 730 177.5

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