ASTROSAT CZTI

Data Quality Report

Orbit 44825

Creation date: 2024-06-27T23:06:56.471241
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_017T01_9000006028_44825cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44825cztM0_level2_quad_clean.evt
Size (bytes)583,833,600113,901,120
Size556.8 MB 108.6 MB
Events in quadrant A6,654,997758,247
Events in quadrant B4,037,309801,545
Events in quadrant C3,305,217775,507
Events in quadrant D7,049,274606,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255032
B0171762
C0153492
D0260912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72853835.257378%
B72852172.978723%
C7285520.713795%
D7285109014.962251%

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 7800 7287 200 200 2.56% 2.74%
B 7799 7286 123 123 1.58% 1.69%
C 7799 7286 19 19 0.24% 0.26%
D 7800 7287 811 811 10.40% 11.13%

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 2285309 13630.41 800 783 167.6
A 15 223 1227839 7321.11 800 783 167.6
A 13 248 32761 190.79 800 783 167.6
B 5 255 176283 1100.91 805 780 159.4
B 5 172 146511 914.15 805 780 159.4
B 0 219 90435 562.4 805 780 159.4
C 12 2 50378 264.89 797 802 187.2
C 3 233 48821 256.57 797 802 187.2
C 14 254 36595 191.25 797 802 187.2
D 1 52 1216224 6693.5 723 699 181.6
D 13 174 1115277 6137.61 723 699 181.6
D 13 187 896909 4935.13 723 699 181.6

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