ASTROSAT CZTI

Data Quality Report

Orbit 19860

Creation date: 2024-06-27T18:08:00.067625
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/AS1T03_118T01_9000002962_19860cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19860cztM0_level2_quad_clean.evt
Size (bytes)539,412,480106,660,800
Size514.4 MB 101.7 MB
Events in quadrant A4,572,013689,338
Events in quadrant B3,547,192719,429
Events in quadrant C4,076,483687,028
Events in quadrant D3,684,554665,727

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178732
B0146672
C0163922
D0151142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67183074.569812%
B6718841.250372%
C67191452.158059%
D67191251.860396%

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 9373 6711 192 192 2.05% 2.86%
B 9373 6712 3 3 0.03% 0.04%
C 9374 6713 4 4 0.04% 0.06%
D 9374 6713 47 47 0.50% 0.70%

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 14 238 1218466 6920.38 871 856 175.9
A 0 226 7190 36.0 871 856 175.9
A 3 137 6827 33.94 871 856 175.9
B 12 111 19868 113.16 887 863 167.9
B 11 111 17588 99.58 887 863 167.9
B 14 111 15734 88.55 887 863 167.9
C 9 221 565308 2790.2 865 873 202.3
C 14 238 133663 656.43 865 873 202.3
C 3 233 6167 26.17 865 873 202.3
D 1 52 257569 1234.99 866 844 207.9
D 12 218 110240 526.26 866 844 207.9
D 2 234 25829 120.19 866 844 207.9

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