ASTROSAT CZTI

Data Quality Report

Orbit 45718

Creation date: 2024-06-27T23:15:20.539560
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/AS1A13_028T01_9000006122_45718cztM0_level2.fits modeM0/AS1A13_028T01_9000006122_45718cztM0_level2_quad_clean.evt
Size (bytes)1,002,340,800193,380,480
Size955.9 MB 184.4 MB
Events in quadrant A10,640,4741,314,274
Events in quadrant B8,489,3861,297,923
Events in quadrant C8,028,8161,304,696
Events in quadrant D8,986,1951,080,498

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404352
B0336603
C0327832
D0354622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124063733.006610%
B124067756.246977%
C124061701.370305%
D1240611439.213284%

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 13346 12407 19 19 0.14% 0.15%
B 13346 12406 311 311 2.33% 2.51%
C 13346 12406 57 57 0.43% 0.46%
D 13346 12406 887 887 6.65% 7.15%

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 10 83 5050760 17414.06 1400 1366 290.0
A 13 248 66207 223.62 1400 1366 290.0
A 2 79 35249 116.85 1400 1366 290.0
B 15 201 1802584 6640.79 1381 1337 271.2
B 3 112 854047 3143.75 1381 1337 271.2
B 0 186 94738 344.35 1381 1337 271.2
C 9 54 2247361 6910.61 1377 1385 325.0
C 14 254 157886 481.54 1377 1385 325.0
C 3 233 120106 365.29 1377 1385 325.0
D 13 249 2265800 6890.3 1303 1263 328.7
D 1 52 864744 2627.31 1303 1263 328.7
D 2 249 211015 638.21 1303 1263 328.7

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