ASTROSAT CZTI

Data Quality Report

Orbit 18160

Creation date: 2024-06-27T17:45:59.694903
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_194T05_9000002702_18160cztM0_level2.evt modeM0/AS1A05_194T05_9000002702_18160cztM0_level2_quad_clean.evt
Size (bytes)221,996,16025,989,120
Size211.7 MB 24.8 MB
Events in quadrant A1,300,026155,974
Events in quadrant B1,307,866158,594
Events in quadrant C1,874,095147,158
Events in quadrant D2,071,465147,045

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054281
B054081
C071551
D078921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2468823.322528%
B2469873.523694%
C246925310.247064%
D24691626.561361%

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 2708 2469 10 10 0.37% 0.41%
B 2709 2470 3 3 0.11% 0.12%
C 2709 2470 84 84 3.10% 3.40%
D 2709 2470 87 87 3.21% 3.52%

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 15 174 57480 841.53 321 313 67.9
A 0 31 3801 51.35 321 313 67.9
A 0 226 2871 37.66 321 313 67.9
B 0 197 25705 386.3 324 315 65.7
B 12 111 7521 109.64 324 315 65.7
B 11 111 6329 91.5 324 315 65.7
C 4 254 623449 8505.5 304 305 73.3
C 14 238 46134 625.54 304 305 73.3
C 5 218 8440 111.04 304 305 73.3
D 7 238 629343 7988.74 309 298 78.7
D 12 233 68498 866.13 309 298 78.7
D 12 110 50032 631.61 309 298 78.7

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