ASTROSAT CZTI

Data Quality Report

Orbit 44126

Creation date: 2024-06-27T22:59:29.545325
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_012T02_9000005950_44126cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44126cztM0_level2_quad_clean.evt
Size (bytes)585,414,72087,724,800
Size558.3 MB 83.7 MB
Events in quadrant A10,623,698315,345
Events in quadrant B2,934,088707,381
Events in quadrant C2,773,317680,238
Events in quadrant D4,897,885556,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0354591
B0124461
C0120802
D0183951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5675329358.026432%
B5675771.356828%
C5675400.704846%
D567567011.806167%

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 6915 5676 2577 2577 37.27% 45.40%
B 6915 5676 5 5 0.07% 0.09%
C 6915 5676 8 8 0.12% 0.14%
D 6915 5676 511 511 7.39% 9.00%

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 15 223 6391019 66304.95 461 452 96.4
A 14 238 1649580 17110.43 461 452 96.4
A 10 83 747012 7745.89 461 452 96.4
B 5 172 44094 323.93 685 666 134.1
B 4 171 37054 271.41 685 666 134.1
B 5 235 33557 245.33 685 666 134.1
C 14 254 94983 590.8 677 683 159.6
C 14 96 16074 96.43 677 683 159.6
C 14 220 15358 91.94 677 683 159.6
D 1 52 1403820 8613.06 643 623 162.9
D 1 47 195476 1196.04 643 623 162.9
D 2 249 157169 960.91 643 623 162.9

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