ASTROSAT CZTI

Data Quality Report

Orbit 20190716_A05_176T04_9000003034_level2

Creation date: 2019-07-17T12:33:48.083667
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/AS1A05_176T04_9000003034cztM0_level2_bc.evt modeM0/AS1A05_176T04_9000003034cztM0_level2_quad_clean.evt
Size (bytes)264,913,92098,167,680
Size252.6 MB 93.6 MB
Events in quadrant A2,434,716654,227
Events in quadrant B1,783,592658,367
Events in quadrant C1,547,020639,634
Events in quadrant D1,863,900623,805

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156630
B0145970
C0131080
D0138470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56732173.825137%
B56741402.467395%
C5674821.445189%
D56741382.432147%

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 11504 5674 85 85 0.74% 1.50%
B 11504 5675 0 0 0.00% 0.00%
C 11504 5676 0 0 0.00% 0.00%
D 11504 5676 52 52 0.45% 0.92%

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 6 16 1219120 17459.59 311 305 69.8
A 8 205 8876 122.78 311 305 69.8
A 11 29 8480 117.11 311 305 69.8
B 7 220 206910 3412.38 311 303 60.5
B 0 197 173718 2864.17 311 303 60.5
B 0 189 74756 1229.69 311 303 60.5
C 8 208 178606 2447.88 300 297 72.8
C 9 221 106311 1455.39 300 297 72.8
C 0 207 104103 1425.08 300 297 72.8
D 12 238 302846 4174.54 307 297 72.5
D 13 153 82544 1134.84 307 297 72.5
D 7 38 76238 1047.83 307 297 72.5

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