ASTROSAT CZTI

Data Quality Report

Orbit 21036

Creation date: 2024-06-27T18:22:47.670052
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_088T02_9000003106_21036cztM0_level2.evt modeM0/AS1A05_088T02_9000003106_21036cztM0_level2_quad_clean.evt
Size (bytes)523,532,16090,385,920
Size499.3 MB 86.2 MB
Events in quadrant A3,572,236568,223
Events in quadrant B3,964,712568,367
Events in quadrant C3,608,269544,209
Events in quadrant D4,193,949528,019

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156211
B0165301
C0156411
D0175591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76002513.302632%
B76003044.000000%
C76012743.604789%
D76013464.552033%

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 7735 7603 0 0 0.00% 0.00%
B 7735 7603 22 22 0.28% 0.29%
C 7736 7604 0 0 0.00% 0.00%
D 7736 7604 112 112 1.45% 1.47%

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 8464 40.1 927 905 188.5
A 0 226 8016 37.72 927 905 188.5
A 3 137 7792 36.54 927 905 188.5
B 7 220 175525 992.61 923 899 175.9
B 0 189 51483 287.53 923 899 175.9
B 3 64 35529 196.84 923 899 175.9
C 14 238 139032 662.39 889 890 208.6
C 13 61 6117 25.06 889 890 208.6
C 2 0 4260 16.16 889 890 208.6
D 1 52 385373 1760.79 894 867 218.4
D 1 20 214448 978.06 894 867 218.4
D 1 239 91474 414.92 894 867 218.4

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