ASTROSAT CZTI

Data Quality Report

Orbit 20190922_T03_138T04_9000003180_level2

Creation date: 2019-09-23T10:44:48.522064
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T03_138T04_9000003180cztM0_level2_bc.evt modeM0/AS1T03_138T04_9000003180cztM0_level2_quad_clean.evt
Size (bytes)194,794,56073,154,880
Size185.8 MB 69.8 MB
Events in quadrant A1,278,529475,013
Events in quadrant B1,360,392480,820
Events in quadrant C1,275,984449,275
Events in quadrant D1,616,359439,764

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114100
B0117080
C0116390
D0123860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5296851.604985%
B52961512.851208%
C52961212.284743%
D5296761.435045%

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 6686 5296 0 0 0.00% 0.00%
B 6686 5296 6 6 0.09% 0.11%
C 6686 5296 1 1 0.01% 0.02%
D 6686 5296 10 10 0.15% 0.19%

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 13 254 7373 98.18 331 325 71.8
A 3 1 2443 29.5 331 325 71.8
A 0 226 2145 25.35 331 325 71.8
B 3 64 39455 620.04 334 328 63.1
B 0 230 20926 326.41 334 328 63.1
B 0 190 12102 186.58 334 328 63.1
C 0 239 72591 984.54 311 310 73.4
C 4 175 3470 43.04 311 310 73.4
C 0 10 2394 28.39 311 310 73.4
D 1 52 191227 2599.42 317 307 73.4
D 14 35 172578 2345.51 317 307 73.4
D 13 153 20876 280.05 317 307 73.4

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