ASTROSAT CZTI

Data Quality Report

Orbit 46807

Creation date: 2024-06-27T23:27:54.266486
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/AS1A13_074T06_9000006270_46807cztM0_level2.fits modeM0/AS1A13_074T06_9000006270_46807cztM0_level2_quad_clean.evt
Size (bytes)480,136,320108,832,320
Size457.9 MB 103.8 MB
Events in quadrant A6,572,507721,773
Events in quadrant B3,601,714762,671
Events in quadrant C3,140,639716,423
Events in quadrant D3,963,629649,518

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238760
B0149420
C0139130
D0161190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63762924.579674%
B6375951.490196%
C6375761.192157%
D63751602.509804%

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 7581 6377 113 113 1.49% 1.77%
B 7580 6376 24 24 0.32% 0.38%
C 7580 6376 58 58 0.77% 0.91%
D 7580 6376 122 122 1.61% 1.91%

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 3591156 23188.98 738 724 154.8
A 9 191 44330 281.63 738 724 154.8
A 15 14 35104 222.04 738 724 154.8
B 3 112 297179 2014.66 742 719 147.2
B 15 36 185147 1253.32 742 719 147.2
B 5 172 62036 416.69 742 719 147.2
C 14 254 248719 1445.73 721 725 171.5
C 0 207 39203 224.31 721 725 171.5
C 15 208 20595 115.84 721 725 171.5
D 1 52 471045 2606.01 716 694 180.5
D 2 37 146716 809.04 716 694 180.5
D 13 249 140621 775.28 716 694 180.5

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