ASTROSAT CZTI

Data Quality Report

Orbit 20180429_A04_122T01_9000002064_level2

Creation date: 2018-05-01T18:12:22.791748
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/AS1A04_122T01_9000002064cztM0_level2_bc.evt modeM0/AS1A04_122T01_9000002064cztM0_level2_quad_clean.evt
Size (bytes)4,005,325,4401,359,270,720
Size3.7 GB 1.3 GB
Events in quadrant A22,816,3658,674,086
Events in quadrant B23,998,0689,283,952
Events in quadrant C23,734,5198,435,138
Events in quadrant D43,846,4627,824,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02153570
B02183630
C02134160
D02890270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020580
B020580
C020580
D020580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10146017091.684408%
B10146118841.856871%
C10146110891.073319%
D10146155915.510492%

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 114577 101465 10 10 0.01% 0.01%
B 114577 101462 33 33 0.03% 0.03%
C 114577 101465 2 2 0.00% 0.00%
D 114577 101464 981 981 0.86% 0.97%

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 8 15 1605129 1375.56 5317 5192 1163.1
A 1 162 227126 190.81 5317 5192 1163.1
A 4 2 216394 181.58 5317 5192 1163.1
B 0 189 463529 429.17 5530 5370 1067.6
B 4 80 392724 362.84 5530 5370 1067.6
B 3 209 366823 338.58 5530 5370 1067.6
C 3 233 3327650 2905.99 5184 5114 1143.3
C 8 128 42835 32.99 5184 5114 1143.3
C 14 234 40422 30.88 5184 5114 1143.3
D 10 157 7453354 6298.08 5015 4874 1182.7
D 1 52 5916955 4998.98 5015 4874 1182.7
D 13 122 4245997 3586.09 5015 4874 1182.7

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