ASTROSAT CZTI

Data Quality Report

Orbit 09237

Creation date: 2024-06-27T15:43:06.556717
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/AS1A03_051T01_9000001288_09237cztM0_level2.evt modeM0/AS1A03_051T01_9000001288_09237cztM0_level2_quad_clean.evt
Size (bytes)471,430,08067,164,480
Size449.6 MB 64.1 MB
Events in quadrant A4,223,506389,448
Events in quadrant B3,343,033397,915
Events in quadrant C3,072,882390,287
Events in quadrant D3,176,599382,622

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168903
B0143232
C0138662
D0142702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67881702.504420%
B6788470.692398%
C6788240.353565%
D6788520.766058%

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 7608 6789 97 97 1.27% 1.43%
B 7608 6789 3 3 0.04% 0.04%
C 7608 6789 0 0 0.00% 0.00%
D 7608 6789 18 18 0.24% 0.27%

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 1006321 6120.64 802 786 164.3
A 13 251 48641 291.29 802 786 164.3
A 1 162 44524 266.23 802 786 164.3
B 0 214 58476 369.52 813 793 156.1
B 4 48 31612 197.43 813 793 156.1
B 4 80 24459 151.61 813 793 156.1
C 12 4 10006 50.3 783 786 183.3
C 13 61 6072 28.84 783 786 183.3
C 8 222 4370 19.55 783 786 183.3
D 7 71 74445 360.15 776 756 204.6
D 1 52 54278 261.59 776 756 204.6
D 12 233 30659 146.15 776 756 204.6

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