ASTROSAT CZTI

Data Quality Report

Orbit 23935

Creation date: 2024-06-27T19:00:13.596566
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/AS1A07_142T01_9000003540_23935cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23935cztM0_level2_quad_clean.evt
Size (bytes)561,202,56085,400,640
Size535.2 MB 81.4 MB
Events in quadrant A3,206,210544,149
Events in quadrant B3,388,313552,158
Events in quadrant C3,279,183525,050
Events in quadrant D6,667,501496,423

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138712
B0143132
C0139462
D0245292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6710370.551416%
B6711881.311280%
C67111041.549695%
D67113875.766652%

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 7500 6712 0 0 0.00% 0.00%
B 7501 6713 1 1 0.01% 0.01%
C 7501 6713 4 4 0.05% 0.06%
D 7501 6713 289 289 3.85% 4.31%

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 12094 66.35 830 811 170.1
A 3 137 7496 39.31 830 811 170.1
A 0 226 7314 38.24 830 811 170.1
B 15 33 74539 459.3 831 809 160.5
B 0 189 32188 195.47 831 809 160.5
B 12 111 19168 114.36 831 809 160.5
C 14 238 123920 653.99 798 803 188.3
C 10 9 31436 162.72 798 803 188.3
C 0 10 9343 45.36 798 803 188.3
D 8 195 3201099 16353.05 794 767 195.7
D 12 218 317530 1618.6 794 767 195.7
D 7 38 65294 329.72 794 767 195.7

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