ASTROSAT CZTI

Data Quality Report

Orbit 27824

Creation date: 2024-06-27T19:44:52.741732
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/AS1A10_048T08_9000004020_27824cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27824cztM0_level2_quad_clean.evt
Size (bytes)533,767,68090,990,720
Size509.0 MB 86.8 MB
Events in quadrant A3,374,147585,222
Events in quadrant B3,714,926587,078
Events in quadrant C3,877,341559,515
Events in quadrant D4,709,693521,655

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147110
B0156770
C0162500
D0189030

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7207170.235882%
B72071041.443041%
C7207941.304287%
D72073635.036770%

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 7832 7208 0 0 0.00% 0.00%
B 7832 7207 42 42 0.54% 0.58%
C 7832 7208 13 13 0.17% 0.18%
D 7832 7208 348 348 4.44% 4.83%

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 12817 67.45 872 854 177.4
A 3 137 8293 41.94 872 854 177.4
A 0 226 7490 37.42 872 854 177.4
B 5 172 84272 497.29 867 844 167.8
B 10 245 81932 483.34 867 844 167.8
B 0 230 30950 179.45 867 844 167.8
C 3 233 491163 2496.29 833 838 196.4
C 14 238 132197 668.76 833 838 196.4
C 13 61 5755 25.03 833 838 196.4
D 1 52 1274856 6394.62 814 791 199.2
D 2 250 233705 1169.01 814 791 199.2
D 12 233 72632 360.57 814 791 199.2

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