ASTROSAT CZTI

Data Quality Report

Orbit 04426

Creation date: 2024-06-27T14:41:48.371755
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_230T04_9000000550_04426cztM0_level2.evt modeM0/AS1G05_230T04_9000000550_04426cztM0_level2_quad_clean.evt
Size (bytes)563,915,52083,096,640
Size537.8 MB 79.2 MB
Events in quadrant A3,060,382531,860
Events in quadrant B3,212,017530,234
Events in quadrant C3,264,915526,771
Events in quadrant D7,107,699480,797

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135992
B0139421
C0141541
D0255931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6395620.969507%
B6395620.969507%
C63951402.189210%
D639570310.992963%

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 7500 6396 28 28 0.37% 0.44%
B 7500 6396 16 16 0.21% 0.25%
C 7500 6396 86 86 1.15% 1.34%
D 7500 6396 736 736 9.81% 11.51%

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 13 157215 1070.94 725 710 146.1
A 0 118 69683 471.97 725 710 146.1
A 13 248 19642 129.55 725 710 146.1
B 14 167 165109 1181.92 736 718 139.1
B 10 16 110969 792.67 736 718 139.1
B 15 204 43776 309.57 736 718 139.1
C 9 247 385167 2336.7 711 712 164.5
C 14 48 70546 424.45 711 712 164.5
C 9 16 23188 136.61 711 712 164.5
D 13 114 3953107 23991.37 689 671 164.7
D 13 53 164406 993.87 689 671 164.7
D 2 136 108182 652.59 689 671 164.7

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