ASTROSAT CZTI

Data Quality Report

Orbit 26083

Creation date: 2024-06-27T19:24:57.476800
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/AS1T03_218T01_9000003770_26083cztM0_level2.evt modeM0/AS1T03_218T01_9000003770_26083cztM0_level2_quad_clean.evt
Size (bytes)747,630,720137,476,800
Size713.0 MB 131.1 MB
Events in quadrant A5,621,577890,927
Events in quadrant B5,406,347900,221
Events in quadrant C5,300,625839,690
Events in quadrant D5,639,396842,459

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227140
B0219790
C0215390
D0228750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99701301.303912%
B99711461.464246%
C99701521.524574%
D99711001.002908%

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 12645 9970 12 12 0.09% 0.12%
B 12646 9971 6 6 0.05% 0.06%
C 12646 9971 0 0 0.00% 0.00%
D 12646 9971 24 24 0.19% 0.24%

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 274670 1018.31 1387 1365 268.4
A 13 254 14535 49.07 1387 1365 268.4
A 0 226 12048 39.8 1387 1365 268.4
B 12 111 29998 114.71 1363 1333 249.9
B 11 111 26680 101.43 1363 1333 249.9
B 14 111 24592 93.07 1363 1333 249.9
C 14 238 216559 726.69 1298 1306 296.2
C 3 233 20493 64.77 1298 1306 296.2
C 13 61 9235 26.77 1298 1306 296.2
D 1 52 356386 1131.83 1329 1301 313.7
D 7 80 129556 408.81 1329 1301 313.7
D 12 233 58912 183.63 1329 1301 313.7

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