ASTROSAT CZTI

Data Quality Report

Orbit 12768

Creation date: 2024-06-27T16:32:24.962591
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/AS1A04_112T01_9000001884_12768cztM0_level2.evt modeM0/AS1A04_112T01_9000001884_12768cztM0_level2_quad_clean.evt
Size (bytes)232,940,16041,567,040
Size222.1 MB 39.6 MB
Events in quadrant A1,045,721302,878
Events in quadrant B1,630,491292,198
Events in quadrant C967,830296,277
Events in quadrant D3,247,448195,962

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047720
B063710
C047380
D0113330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A236600.000000%
B23661817.650042%
C236600.000000%
D236689737.912088%

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 2367 2367 0 0 0.00% 0.00%
B 2367 2367 110 110 4.65% 4.65%
C 2367 2367 0 0 0.00% 0.00%
D 2367 2367 701 701 29.62% 29.62%

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 12 189 13594 240.09 265 259 55.5
A 15 239 5916 101.85 265 259 55.5
A 8 15 4107 69.28 265 259 55.5
B 4 239 535136 10743.13 256 250 49.8
B 0 219 41023 818.92 256 250 49.8
B 0 85 40010 798.58 256 250 49.8
C 13 61 1835 27.09 247 248 58.6
C 15 208 1695 24.7 247 248 58.6
C 8 222 874 10.69 247 248 58.6
D 1 52 2191410 49070.91 177 171 44.7
D 10 157 212508 4755.1 177 171 44.7
D 8 195 102070 2281.94 177 171 44.7

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