ASTROSAT CZTI

Data Quality Report

Orbit 06919

Creation date: 2024-06-27T15:13:06.702121
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/AS1A02_005T01_9000000948_06919cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06919cztM0_level2_quad_clean.evt
Size (bytes)486,875,52065,085,120
Size464.3 MB 62.1 MB
Events in quadrant A3,239,413384,886
Events in quadrant B3,492,472387,016
Events in quadrant C3,252,286385,091
Events in quadrant D4,326,089366,558

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136473
B0145782
C0135842
D0171972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64121111.731129%
B64121101.715533%
C6412931.450405%
D64123014.694323%

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 7697 6413 0 0 0.00% 0.00%
B 7697 6413 3 3 0.04% 0.05%
C 7697 6413 0 0 0.00% 0.00%
D 7697 6413 172 172 2.23% 2.68%

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 15 223 16605 93.83 833 817 168.3
A 0 226 8089 43.22 833 817 168.3
A 12 194 7965 42.48 833 817 168.3
B 0 228 68028 431.76 833 815 155.7
B 4 81 65028 412.49 833 815 155.7
B 0 214 48363 305.44 833 815 155.7
C 9 247 64762 344.67 810 815 185.5
C 1 16 11416 57.14 810 815 185.5
C 13 61 6302 29.57 810 815 185.5
D 2 14 366332 1890.49 802 779 193.4
D 1 20 361505 1865.53 802 779 193.4
D 2 33 340629 1757.57 802 779 193.4

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