ASTROSAT CZTI

Data Quality Report

Orbit 46748

Creation date: 2024-06-27T23:27:08.838223
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_092T17_9000006262_46748cztM0_level2.fits modeM0/AS1A13_092T17_9000006262_46748cztM0_level2_quad_clean.evt
Size (bytes)617,731,200101,246,400
Size589.1 MB 96.6 MB
Events in quadrant A6,980,468686,835
Events in quadrant B8,031,359602,770
Events in quadrant C3,175,427703,919
Events in quadrant D4,183,529624,994

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
A02507259
B02841764
C01410718
D01705034

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64043685.746408%
B6406137621.479863%
C6411671.045079%
D64033064.779010%

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 7566 6417 153 153 2.02% 2.38%
B 7566 6414 1105 1105 14.60% 17.23%
C 7566 6418 54 54 0.71% 0.84%
D 7565 6414 258 258 3.41% 4.02%

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 10 83 3624115 24519.36 710 694 147.8
A 3 7 212805 1435.34 710 694 147.8
A 9 191 192825 1300.13 710 694 147.8
B 3 112 4997852 37345.54 678 658 133.8
B 15 201 63221 467.55 678 658 133.8
B 12 3 60537 447.49 678 658 133.8
C 14 254 353644 2110.59 709 715 167.2
C 3 233 41662 244.87 709 715 167.2
C 12 2 10097 56.11 709 715 167.2
D 13 249 1003430 5747.13 695 675 174.5
D 1 52 117182 667.74 695 675 174.5
D 13 138 111611 635.81 695 675 174.5

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