ASTROSAT CZTI

Data Quality Report

Orbit 20181026_A05_002T10_9000002460_level2

Creation date: 2018-10-29T09:35:55.580154
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_002T10_9000002460cztM0_level2_bc.evt modeM0/AS1A05_002T10_9000002460cztM0_level2_quad_clean.evt
Size (bytes)1,016,124,480366,465,600
Size969.1 MB 349.5 MB
Events in quadrant A6,240,7042,344,599
Events in quadrant B6,006,4522,409,331
Events in quadrant C5,374,2332,289,804
Events in quadrant D11,303,4332,195,180

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580600
B0578580
C0553400
D0766030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05500
B05500
C05500
D05500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A270543901.441561%
B270542700.998004%
C270542951.090412%
D2705413595.023287%

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 28410 27056 116 116 0.41% 0.43%
B 28410 27055 1 1 0.00% 0.00%
C 28410 27057 0 0 0.00% 0.00%
D 28410 27054 241 241 0.85% 0.89%

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 9 143 857424 2960.02 1314 1285 289.2
A 12 96 182580 626.81 1314 1285 289.2
A 3 1 130130 445.47 1314 1285 289.2
B 15 35 252005 977.07 1337 1302 256.6
B 0 189 187811 726.88 1337 1302 256.6
B 0 198 143538 554.34 1337 1302 256.6
C 3 233 382153 1242.95 1282 1269 306.4
C 7 247 46897 148.9 1282 1269 306.4
C 14 67 11738 34.16 1282 1269 306.4
D 1 52 3133127 10200.52 1283 1237 307.0
D 2 16 2523520 8215.04 1283 1237 307.0
D 10 70 284215 921.66 1283 1237 307.0

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