ASTROSAT CZTI

Data Quality Report

Orbit 41136

Creation date: 2024-06-27T22:24:54.011165
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/AS1A12_052T04_9000005602_41136cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41136cztM0_level2_quad_clean.evt
Size (bytes)888,393,600206,922,240
Size847.2 MB 197.3 MB
Events in quadrant A6,736,4911,419,491
Events in quadrant B11,241,3641,289,070
Events in quadrant C6,823,0611,380,410
Events in quadrant D7,068,2771,269,866

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279383
B0426422
C0286682
D0307702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13115300.228746%
B13115157912.039649%
C131151080.823485%
D131152621.997713%

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 15919 13117 14 14 0.09% 0.11%
B 15919 13117 1177 1177 7.39% 8.97%
C 15919 13117 84 84 0.53% 0.64%
D 15919 13117 187 187 1.17% 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 10 83 974959 3348.34 1428 1400 290.8
A 2 79 125091 425.41 1428 1400 290.8
A 12 189 96535 327.19 1428 1400 290.8
B 0 245 4680979 17914.4 1357 1320 261.2
B 0 186 983884 3761.39 1357 1320 261.2
B 7 202 109960 415.89 1357 1320 261.2
C 9 54 647101 2004.78 1392 1401 322.1
C 15 214 545665 1689.84 1392 1401 322.1
C 14 254 110097 337.48 1392 1401 322.1
D 13 249 697075 2055.79 1395 1356 338.4
D 2 249 585404 1725.81 1395 1356 338.4
D 2 16 382272 1125.57 1395 1356 338.4

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