ASTROSAT CZTI

Data Quality Report

Orbit 31636

Creation date: 2024-06-27T20:31:00.312649
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/AS1T04_035T01_9000004622_31636cztM0_level2.evt modeM0/AS1T04_035T01_9000004622_31636cztM0_level2_quad_clean.evt
Size (bytes)520,076,16075,686,400
Size496.0 MB 72.2 MB
Events in quadrant A2,585,587497,634
Events in quadrant B4,646,883483,109
Events in quadrant C3,045,080479,685
Events in quadrant D5,099,196445,063

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113381
B0178151
C0124691
D0191661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5520801.449275%
B55202594.692029%
C55201462.644928%
D55204868.804348%

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 6070 5521 4 4 0.07% 0.07%
B 6070 5521 110 110 1.81% 1.99%
C 6070 5521 10 10 0.16% 0.18%
D 6070 5521 448 448 7.38% 8.11%

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 15 174 33008 240.86 659 643 134.4
A 13 254 10820 75.74 659 643 134.4
A 3 137 6692 45.02 659 643 134.4
B 6 159 1536025 12413.94 643 627 123.7
B 10 245 287324 2317.99 643 627 123.7
B 5 172 156653 1261.5 643 627 123.7
C 3 233 326259 2170.3 627 630 150.0
C 14 238 102965 682.06 627 630 150.0
C 14 225 66450 438.69 627 630 150.0
D 8 195 1032381 6965.22 616 598 148.1
D 11 176 1023055 6902.26 616 598 148.1
D 13 249 281684 1897.52 616 598 148.1

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