ASTROSAT CZTI

Data Quality Report

Orbit 09635

Creation date: 2024-06-27T15:48:42.263766
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_077T01_9000001372_09635cztM0_level2.evt modeM0/AS1A03_077T01_9000001372_09635cztM0_level2_quad_clean.evt
Size (bytes)425,551,68076,740,480
Size405.8 MB 73.2 MB
Events in quadrant A2,933,848473,450
Events in quadrant B3,076,357476,783
Events in quadrant C2,898,027469,475
Events in quadrant D3,539,085452,248

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310028
B01332328
C01309717
D01488524

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470150.231839%
B6471260.401793%
C6475230.355212%
D6477821.266018%

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 7533 6483 0 0 0.00% 0.00%
B 7533 6484 1 1 0.01% 0.02%
C 7533 6484 0 0 0.00% 0.00%
D 7533 6483 62 62 0.82% 0.96%

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 13 253 7851 45.91 761 745 154.8
A 0 226 7041 40.68 761 745 154.8
A 12 194 6235 35.47 761 745 154.8
B 0 214 31717 208.82 768 750 148.3
B 0 229 29968 197.03 768 750 148.3
B 12 111 16424 105.7 768 750 148.3
C 13 61 5426 27.21 741 744 172.1
C 12 4 3551 16.31 741 744 172.1
C 14 234 2126 8.03 741 744 172.1
D 1 52 208350 1181.08 729 713 175.8
D 8 195 141635 801.59 729 713 175.8
D 12 233 104563 590.72 729 713 175.8

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