ASTROSAT CZTI

Data Quality Report

Orbit 20417

Creation date: 2024-06-27T18:15:09.527445
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_140T01_9000003016_20417cztM0_level2.evt modeM0/AS1A05_140T01_9000003016_20417cztM0_level2_quad_clean.evt
Size (bytes)851,639,040172,846,080
Size812.2 MB 164.8 MB
Events in quadrant A5,999,0631,125,771
Events in quadrant B6,338,2571,115,420
Events in quadrant C5,927,2141,071,908
Events in quadrant D6,684,1861,061,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255652
B0266202
C0255342
D0281982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12459710.569869%
B124591010.810659%
C124591070.858817%
D124592151.725660%

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 13824 12461 0 0 0.00% 0.00%
B 13824 12461 10 10 0.07% 0.08%
C 13824 12461 0 0 0.00% 0.00%
D 13824 12461 178 178 1.29% 1.43%

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 12 16 131297 427.85 1520 1490 303.4
A 12 194 30869 96.83 1520 1490 303.4
A 0 226 13005 37.95 1520 1490 303.4
B 10 245 315049 1080.0 1499 1461 290.4
B 0 189 77904 263.27 1499 1461 290.4
B 12 111 35328 116.64 1499 1461 290.4
C 14 238 227574 670.25 1442 1455 337.4
C 3 233 48892 140.61 1442 1455 337.4
C 7 220 17287 46.93 1442 1455 337.4
D 1 52 885707 2475.02 1469 1432 357.3
D 13 153 104462 288.37 1469 1432 357.3
D 2 16 88289 243.11 1469 1432 357.3

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