ASTROSAT CZTI

Data Quality Report

Orbit 26164

Creation date: 2024-06-27T19:25:33.619395
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/AS1A09_138T04_9000003776_26164cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26164cztM0_level2_quad_clean.evt
Size (bytes)1,327,360,320231,024,960
Size1.2 GB 220.3 MB
Events in quadrant A9,202,3301,443,986
Events in quadrant B9,016,8401,471,573
Events in quadrant C10,187,8291,397,743
Events in quadrant D10,524,7001,391,435

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389050
B0385730
C0417430
D0433720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187581860.991577%
B187592221.183432%
C187594082.174956%
D187593141.673863%

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 20493 18758 0 0 0.00% 0.00%
B 20494 18759 4 4 0.02% 0.02%
C 20493 18758 82 82 0.40% 0.44%
D 20494 18759 171 171 0.83% 0.91%

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 324076 701.19 2293 2241 459.0
A 6 16 40769 83.94 2293 2241 459.0
A 13 254 29884 60.23 2293 2241 459.0
B 12 111 53874 118.53 2277 2219 435.8
B 11 111 48204 105.52 2277 2219 435.8
B 14 111 42299 91.97 2277 2219 435.8
C 3 233 1113318 2164.84 2192 2205 513.3
C 14 238 349644 676.93 2192 2205 513.3
C 2 16 184117 354.43 2192 2205 513.3
D 1 52 1754572 3311.92 2229 2176 529.1
D 12 233 165318 308.33 2229 2176 529.1
D 2 234 86840 160.01 2229 2176 529.1

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