ASTROSAT CZTI

Data Quality Report

Orbit 15866

Creation date: 2024-06-27T17:14:32.216193
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/AS1A04_143T01_9000002344_15866cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15866cztM0_level2_quad_clean.evt
Size (bytes)498,666,24096,168,960
Size475.6 MB 91.7 MB
Events in quadrant A3,871,281605,026
Events in quadrant B3,634,383627,773
Events in quadrant C3,804,131593,029
Events in quadrant D3,302,165583,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164363
B0154882
C0157252
D0149452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7218951.316154%
B72181181.634802%
C7218961.330008%
D7218160.221668%

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 9434 7221 18 18 0.19% 0.25%
B 9434 7221 3 3 0.03% 0.04%
C 9434 7221 7 7 0.07% 0.10%
D 9434 7221 0 0 0.00% 0.00%

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 15 239 436501 2399.4 891 873 181.6
A 9 143 7976 39.12 891 873 181.6
A 0 226 7831 38.32 891 873 181.6
B 5 65 42609 240.62 901 876 173.4
B 4 173 24586 136.7 901 876 173.4
B 12 16 21243 117.43 901 876 173.4
C 3 233 144711 710.66 862 867 202.4
C 0 207 140943 692.04 862 867 202.4
C 14 238 130939 642.62 862 867 202.4
D 2 234 26245 118.64 872 846 214.1
D 10 172 10118 43.31 872 846 214.1
D 14 226 8695 36.66 872 846 214.1

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