ASTROSAT CZTI

Data Quality Report

Orbit 43477

Creation date: 2024-06-27T22:52:26.219076
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_018T01_9000005874_43477cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43477cztM0_level2_quad_clean.evt
Size (bytes)492,068,16080,262,720
Size469.3 MB 76.5 MB
Events in quadrant A6,687,673451,143
Events in quadrant B2,564,434591,416
Events in quadrant C2,453,337568,637
Events in quadrant D6,091,805442,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236014
B0115862
C0108392
D0217992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5369154328.739058%
B5369140.260756%
C536920.037251%
D536998618.364686%

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 7222 5369 1173 1173 16.24% 21.85%
B 7223 5370 7 7 0.10% 0.13%
C 7223 5370 1 1 0.01% 0.02%
D 7223 5370 939 939 13.00% 17.49%

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 15 222 3746758 35899.61 509 497 104.4
A 10 83 555517 5318.64 509 497 104.4
A 15 237 369836 3539.3 509 497 104.4
B 3 112 130082 1208.52 561 546 107.2
B 0 245 95719 887.93 561 546 107.2
B 0 186 42133 387.99 561 546 107.2
C 15 214 237770 1829.58 550 551 129.7
C 3 233 58561 447.41 550 551 129.7
C 15 159 8585 61.96 550 551 129.7
D 13 249 1516319 12473.87 498 483 121.5
D 1 52 854445 7027.28 498 483 121.5
D 2 16 677095 5567.86 498 483 121.5

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