ASTROSAT CZTI

Data Quality Report

Orbit 20190108_T03_070T02_9000002634_level2

Creation date: 2019-01-09T14:22:16.464553
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_070T02_9000002634cztM0_level2_bc.evt modeM0/AS1T03_070T02_9000002634cztM0_level2_quad_clean.evt
Size (bytes)304,934,400126,336,960
Size290.8 MB 120.5 MB
Events in quadrant A1,948,233796,102
Events in quadrant B2,087,557797,470
Events in quadrant C1,927,683767,999
Events in quadrant D2,578,751768,658

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205760
B0209130
C0204790
D0223380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A100411021.015835%
B100411361.354447%
C100411311.304651%
D100411481.473957%

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 11401 10039 0 0 0.00% 0.00%
B 11401 10039 0 0 0.00% 0.00%
C 11401 10039 0 0 0.00% 0.00%
D 11401 10039 9 9 0.08% 0.09%

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 46478 417.22 492 481 110.2
A 15 31 8156 69.62 492 481 110.2
A 15 191 3500 27.38 492 481 110.2
B 7 220 61090 623.92 495 482 97.1
B 10 245 31319 317.45 495 482 97.1
B 0 229 20026 201.19 495 482 97.1
C 5 218 53293 459.88 477 471 114.9
C 3 233 27329 233.83 477 471 114.9
C 0 207 3630 27.5 477 471 114.9
D 1 52 400132 3195.2 487 470 125.1
D 7 238 156343 1246.17 487 470 125.1
D 2 234 47994 379.94 487 470 125.1

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