ASTROSAT CZTI

Data Quality Report

Orbit 24189

Creation date: 2024-06-27T19:03:15.489703
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/AS1A07_067T01_9000003578_24189cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24189cztM0_level2_quad_clean.evt
Size (bytes)484,104,96092,842,560
Size461.7 MB 88.5 MB
Events in quadrant A3,409,631595,017
Events in quadrant B3,347,470608,123
Events in quadrant C3,366,765578,317
Events in quadrant D4,091,166571,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138792
B0136692
C0137962
D0161082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65731512.297277%
B65741081.642835%
C65741382.099179%
D65742073.148768%

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 7653 6573 29 29 0.38% 0.44%
B 7654 6575 1 1 0.01% 0.02%
C 7654 6574 5 5 0.07% 0.08%
D 7654 6575 127 127 1.66% 1.93%

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 6 16 111791 649.09 856 840 170.9
A 13 254 9915 53.09 856 840 170.9
A 0 226 7578 39.42 856 840 170.9
B 12 111 18972 113.21 847 826 160.3
B 11 111 17004 100.93 847 826 160.3
B 14 111 15265 90.08 847 826 160.3
C 14 238 132496 703.63 807 812 187.2
C 2 16 38763 202.78 807 812 187.2
C 7 247 25412 131.44 807 812 187.2
D 1 52 661491 3326.9 825 800 198.6
D 8 195 160231 802.81 825 800 198.6
D 7 238 118041 590.36 825 800 198.6

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter