ASTROSAT CZTI

Data Quality Report

Orbit 34376

Creation date: 2022-02-05T19:27:03.192883
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_085T01_9000004910_34376cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34376cztM0_level2_quad_clean.evt
Size (bytes)114,321,60020,718,720
Size109.0 MB 19.8 MB
Events in quadrant A528,863148,073
Events in quadrant B699,865146,696
Events in quadrant C681,781143,615
Events in quadrant D1,486,983117,471

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021472
B027381
C027091
D050601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91330.328587%
B913434.709748%
C913192.081051%
D91331534.501643%

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 913 913 0 0 0.00% 0.00%
B 913 913 21 21 2.30% 2.30%
C 913 913 13 13 1.42% 1.42%
D 913 913 241 241 26.40% 26.40%

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 10 83 14208 490.81 132 129 28.7
A 13 6 2137 70.0 132 129 28.7
A 13 254 1511 48.18 132 129 28.7
B 5 172 111259 4262.04 127 124 26.1
B 4 251 42236 1615.0 127 124 26.1
B 5 255 13494 512.74 127 124 26.1
C 4 254 75950 2538.04 123 124 29.9
C 15 214 42019 1402.31 123 124 29.9
C 0 10 38637 1289.1 123 124 29.9
D 12 235 268888 9225.88 112 109 29.1
D 7 223 251109 8615.61 112 109 29.1
D 8 195 178933 6138.16 112 109 29.1

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