ASTROSAT CZTI

Data Quality Report

Orbit 31810

Creation date: 2024-06-27T20:33:02.277164
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/AS1A10_109T01_9000004646_31810cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31810cztM0_level2_quad_clean.evt
Size (bytes)141,220,8006,664,320
Size134.7 MB 6.4 MB
Events in quadrant A897,15525,077
Events in quadrant B1,199,16525,736
Events in quadrant C867,41419,563
Events in quadrant D1,213,75024,266

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035431
B045531
C034261
D046691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1430443.076923%
B1429412.869139%
C14291017.067880%
D1429392.729181%

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 1430 1430 27 27 1.89% 1.89%
B 1429 1429 10 10 0.70% 0.70%
C 1429 1429 39 39 2.73% 2.73%
D 1429 1429 34 34 2.38% 2.38%

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 0 13 206219 5426.11 178 175 38.0
A 13 254 2599 63.84 178 175 38.0
A 13 6 2089 50.4 178 175 38.0
B 6 159 387748 10522.37 179 175 36.8
B 10 245 96487 2614.81 179 175 36.8
B 12 111 4566 119.21 179 175 36.8
C 0 10 161103 3953.94 165 165 40.7
C 14 238 36511 892.95 165 165 40.7
C 14 254 13225 320.86 165 165 40.7
D 8 195 438439 10332.27 168 162 42.4
D 12 218 119197 2806.22 168 162 42.4
D 12 250 8520 197.04 168 162 42.4

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