ASTROSAT CZTI

Data Quality Report

Orbit 03776

Creation date: 2024-06-27T14:33:31.443837
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/AS1G05_248T01_9000000486_03776cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03776cztM0_level2_quad_clean.evt
Size (bytes)522,702,72056,232,000
Size498.5 MB 53.6 MB
Events in quadrant A3,582,478320,299
Events in quadrant B3,712,528320,397
Events in quadrant C3,648,013313,915
Events in quadrant D4,452,674300,672

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146873
B0149702
C0152082
D0175152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64061822.841086%
B64061211.888854%
C6406871.358102%
D64061362.123010%

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 7661 6406 100 100 1.31% 1.56%
B 7661 6407 57 57 0.74% 0.89%
C 7661 6407 45 45 0.59% 0.70%
D 7661 6407 120 120 1.57% 1.87%

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 0 50 215981 1337.67 785 768 160.9
A 13 251 163209 1009.66 785 768 160.9
A 0 118 118778 733.5 785 768 160.9
B 15 204 240450 1570.17 801 783 152.6
B 5 200 183521 1197.2 801 783 152.6
B 0 244 110838 721.02 801 783 152.6
C 2 53 681985 3854.82 758 763 176.7
C 13 61 6469 32.29 758 763 176.7
C 14 67 3146 13.48 758 763 176.7
D 1 20 842355 4659.48 752 730 180.6
D 1 84 575914 3184.38 752 730 180.6
D 13 223 52875 288.69 752 730 180.6

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
Veto Counter