ASTROSAT CZTI

Data Quality Report

Orbit 14598

Creation date: 2024-06-27T16:57:18.845803
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/AS1G08_055T02_9000002148_14598cztM0_level2.evt modeM0/AS1G08_055T02_9000002148_14598cztM0_level2_quad_clean.evt
Size (bytes)1,671,975,360203,578,560
Size1.6 GB 194.1 MB
Events in quadrant A19,344,1111,223,345
Events in quadrant B8,687,5561,270,003
Events in quadrant C9,459,2581,244,676
Events in quadrant D11,934,2811,186,361

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0702334
B0370483
C0383073
D0476763

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179928844.913295%
B179922801.556247%
C179921991.106047%
D1799212677.042019%

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 19718 17993 253 253 1.28% 1.41%
B 19718 17993 4 4 0.02% 0.02%
C 19718 17995 0 0 0.00% 0.00%
D 19718 17993 831 831 4.21% 4.62%

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 0 23 9747335 22430.98 2137 2087 434.5
A 0 226 598881 1373.66 2137 2087 434.5
A 12 189 275659 629.69 2137 2087 434.5
B 0 189 82722 192.74 2158 2100 418.3
B 12 111 50825 116.48 2158 2100 418.3
B 11 111 43348 98.61 2158 2100 418.3
C 3 233 1261625 2579.39 2098 2108 488.3
C 13 61 14831 26.05 2098 2108 488.3
C 10 22 8760 13.62 2098 2108 488.3
D 10 199 2422459 5034.36 2033 1984 480.8
D 12 110 1245807 2587.03 2033 1984 480.8
D 2 14 211499 435.77 2033 1984 480.8

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