ASTROSAT CZTI

Data Quality Report

Orbit 11848

Creation date: 2024-06-27T16:19:05.723982
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_088T03_9000001750_11848cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11848cztM0_level2_quad_clean.evt
Size (bytes)1,314,555,840228,340,800
Size1.2 GB 217.8 MB
Events in quadrant A9,190,4221,452,557
Events in quadrant B11,429,6151,416,514
Events in quadrant C8,184,6421,409,504
Events in quadrant D9,756,8551,362,970

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394796
B0462505
C0374945
D0421695

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184812651.433905%
B184818354.518154%
C184811630.881987%
D184824452.407748%

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 20477 18485 6 6 0.03% 0.03%
B 20477 18484 354 354 1.73% 1.92%
C 20477 18485 0 0 0.00% 0.00%
D 20478 18485 227 227 1.11% 1.23%

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 1 162 314918 712.82 2176 2130 438.8
A 1 178 165012 371.2 2176 2130 438.8
A 1 161 143928 323.15 2176 2130 438.8
B 4 239 1528286 3768.49 2143 2092 405.0
B 15 204 439051 1078.94 2143 2092 405.0
B 3 64 401681 986.67 2143 2092 405.0
C 13 61 15883 28.45 2098 2106 484.2
C 12 4 5837 7.71 2098 2106 484.2
C 3 202 4976 5.93 2098 2106 484.2
D 1 52 1060667 2138.19 2078 2015 495.1
D 13 122 200556 401.0 2078 2015 495.1
D 13 249 162189 323.51 2078 2015 495.1

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