ASTROSAT CZTI

Data Quality Report

Orbit 21345

Creation date: 2024-06-27T18:26:50.351788
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/AS1A05_226T05_9000003148_21345cztM0_level2.evt modeM0/AS1A05_226T05_9000003148_21345cztM0_level2_quad_clean.evt
Size (bytes)434,185,920119,329,920
Size414.1 MB 113.8 MB
Events in quadrant A3,109,636805,651
Events in quadrant B3,061,365817,395
Events in quadrant C2,884,869787,304
Events in quadrant D3,666,124765,259

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130801
B0131501
C0127631
D0152161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6283610.970874%
B6284500.795672%
C6284550.875239%
D62841943.087206%

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 7263 6284 10 10 0.14% 0.16%
B 7264 6285 4 4 0.06% 0.06%
C 7264 6286 0 0 0.00% 0.00%
D 7264 6285 127 127 1.75% 2.02%

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 5 168 104969 700.02 741 726 148.9
A 9 143 77478 515.41 741 726 148.9
A 15 174 35011 230.23 741 726 148.9
B 0 230 41234 294.56 738 720 137.5
B 0 245 32367 230.09 738 720 137.5
B 3 64 31617 224.64 738 720 137.5
C 14 238 113057 684.48 706 711 164.1
C 10 23 9216 51.82 706 711 164.1
C 7 247 8797 49.26 706 711 164.1
D 1 52 681705 3981.53 712 691 171.0
D 7 38 96824 562.04 712 691 171.0
D 13 153 68169 394.51 712 691 171.0

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