ASTROSAT CZTI

Data Quality Report

Orbit 46488

Creation date: 2024-06-27T23:23:45.108000
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_037T05_9000006216_46488cztM0_level2.fits modeM0/AS1A13_037T05_9000006216_46488cztM0_level2_quad_clean.evt
Size (bytes)461,882,880110,364,480
Size440.5 MB 105.3 MB
Events in quadrant A5,821,040732,899
Events in quadrant B3,203,583767,577
Events in quadrant C2,982,056742,988
Events in quadrant D4,604,991661,820

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211411
B0134941
C0129811
D0179071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62611462.331896%
B6261801.277751%
C6262540.862344%
D62622113.369531%

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 7406 6261 8 8 0.11% 0.13%
B 7406 6262 14 14 0.19% 0.22%
C 7407 6263 0 0 0.00% 0.00%
D 7407 6262 123 123 1.66% 1.96%

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 2914446 19194.61 742 728 151.8
A 0 247 18933 119.93 742 728 151.8
A 13 254 11356 70.01 742 728 151.8
B 4 171 84335 574.04 739 716 145.7
B 5 32 67373 457.6 739 716 145.7
B 5 172 62693 425.47 739 716 145.7
C 9 54 46211 258.39 745 749 175.9
C 5 250 15483 83.74 745 749 175.9
C 3 233 13536 72.68 745 749 175.9
D 1 52 1174746 6389.53 734 713 183.7
D 2 249 196863 1067.52 734 713 183.7
D 13 249 106132 573.73 734 713 183.7

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