ASTROSAT CZTI

Data Quality Report

Orbit 20958

Creation date: 2024-06-27T18:21:39.196322
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/AS1A05_088T05_9000003088_20958cztM0_level2.evt modeM0/AS1A05_088T05_9000003088_20958cztM0_level2_quad_clean.evt
Size (bytes)799,943,040125,568,000
Size762.9 MB 119.8 MB
Events in quadrant A5,484,778778,291
Events in quadrant B6,098,206781,521
Events in quadrant C5,542,315743,860
Events in quadrant D6,344,998726,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232792
B0253032
C0234422
D0262832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11165700.626959%
B111661521.361275%
C111661361.217983%
D111661721.540390%

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 13525 11167 20 20 0.15% 0.18%
B 13526 11168 35 35 0.26% 0.31%
C 13526 11168 31 31 0.23% 0.28%
D 13526 11168 124 124 0.92% 1.11%

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 5 16 96489 339.63 1402 1373 280.1
A 0 226 12358 39.22 1402 1373 280.1
A 3 137 10932 34.13 1402 1373 280.1
B 7 220 420979 1601.77 1402 1367 262.0
B 0 190 61043 227.8 1402 1367 262.0
B 3 64 57903 215.81 1402 1367 262.0
C 14 238 212119 686.18 1334 1344 307.2
C 9 54 123407 397.38 1334 1344 307.2
C 13 61 9415 26.28 1334 1344 307.2
D 1 52 559173 1723.73 1343 1309 323.6
D 7 238 313885 965.82 1343 1309 323.6
D 1 239 156266 478.8 1343 1309 323.6

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