ASTROSAT CZTI

Data Quality Report

Orbit 20191120_T03_149T02_9000003316_level2

Creation date: 2019-11-21T09:41:54.040819
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_149T02_9000003316cztM0_level2_bc.evt modeM0/AS1T03_149T02_9000003316cztM0_level2_quad_clean.evt
Size (bytes)190,650,24073,736,640
Size181.8 MB 70.3 MB
Events in quadrant A1,089,734468,859
Events in quadrant B1,194,936476,216
Events in quadrant C1,054,804452,754
Events in quadrant D2,039,150437,525

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115690
B0118510
C0115840
D0141780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5682470.827174%
B5682701.231961%
C5682581.020767%
D56821662.921507%

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 5680 5680 0 0 0.00% 0.00%
B 5681 5681 4 4 0.07% 0.07%
C 5681 5681 0 0 0.00% 0.00%
D 5680 5680 98 98 1.73% 1.73%

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 7594 113.93 281 273 64.3
A 8 255 2111 28.6 281 273 64.3
A 12 194 1789 23.59 281 273 64.3
B 3 64 45240 789.13 284 276 57.0
B 0 197 16405 283.07 284 276 57.0
B 4 173 14079 242.25 284 276 57.0
C 1 16 3647 50.14 273 269 67.4
C 13 61 1521 18.58 273 269 67.4
C 10 22 1280 15.0 273 269 67.4
D 1 52 889082 13587.51 276 265 65.4
D 9 85 32788 497.19 276 265 65.4
D 2 234 23604 356.79 276 265 65.4

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