ASTROSAT CZTI

Data Quality Report

Orbit 24297

Creation date: 2024-06-27T19:04:29.435810
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/AS1A07_145T01_9000003594_24297cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24297cztM0_level2_quad_clean.evt
Size (bytes)1,199,396,160187,678,080
Size1.1 GB 179.0 MB
Events in quadrant A6,883,2791,187,347
Events in quadrant B7,029,4121,207,172
Events in quadrant C7,870,1271,170,840
Events in quadrant D13,561,1761,116,915

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297693
B0299523
C0321273
D0501953

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145101410.971744%
B145101801.240524%
C145102421.667815%
D14510198913.707788%

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 16460 14510 0 0 0.00% 0.00%
B 16460 14510 14 14 0.09% 0.10%
C 16460 14510 15 15 0.09% 0.10%
D 16460 14510 1629 1629 9.90% 11.23%

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 13 254 22059 56.7 1779 1740 358.3
A 3 1 21069 53.94 1779 1740 358.3
A 3 137 16496 41.18 1779 1740 358.3
B 5 32 52420 148.2 1775 1729 342.0
B 12 111 41537 116.38 1775 1729 342.0
B 11 111 37132 103.5 1775 1729 342.0
C 7 247 846886 2125.47 1709 1718 397.6
C 14 238 271575 678.65 1709 1718 397.6
C 2 16 76528 188.13 1709 1718 397.6
D 1 52 5584367 13925.9 1636 1584 400.9
D 8 195 1463166 3645.82 1636 1584 400.9
D 12 233 173903 429.84 1636 1584 400.9

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