ASTROSAT CZTI

Data Quality Report

Orbit 25167

Creation date: 2024-06-27T19:14:31.093308
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_018T02_9000003684_25167cztM0_level2.evt modeM0/AS1A07_018T02_9000003684_25167cztM0_level2_quad_clean.evt
Size (bytes)857,799,360127,186,560
Size818.1 MB 121.3 MB
Events in quadrant A5,549,509781,510
Events in quadrant B5,635,535791,956
Events in quadrant C6,364,391755,223
Events in quadrant D7,656,661733,170

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235870
B0237300
C0258070
D0304060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11417820.718227%
B11417910.797057%
C114172972.601384%
D114164684.099509%

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 13377 11417 0 0 0.00% 0.00%
B 13377 11417 2 2 0.01% 0.02%
C 13377 11417 134 134 1.00% 1.17%
D 13376 11416 387 387 2.89% 3.39%

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 13 254 17994 57.7 1439 1407 287.5
A 3 137 13359 41.58 1439 1407 287.5
A 0 226 12419 38.31 1439 1407 287.5
B 0 190 37648 133.54 1422 1383 271.6
B 12 111 33658 118.85 1422 1383 271.6
B 11 111 30241 106.26 1422 1383 271.6
C 7 87 688576 2167.93 1363 1373 317.0
C 14 238 219968 689.6 1363 1373 317.0
C 7 247 113485 353.68 1363 1373 317.0
D 1 52 1584012 4739.64 1375 1332 333.9
D 12 235 486163 1451.92 1375 1332 333.9
D 8 195 270882 807.22 1375 1332 333.9

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