ASTROSAT CZTI

Data Quality Report

Orbit 20200226_A07_001T01_9000003538_level2

Creation date: 2020-02-27T14:04:24.879666
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/AS1A07_001T01_9000003538cztM0_level2_bc.evt modeM0/AS1A07_001T01_9000003538cztM0_level2_quad_clean.evt
Size (bytes)925,724,160525,738,240
Size882.8 MB 501.4 MB
Events in quadrant A5,893,3073,572,644
Events in quadrant B5,837,7833,655,099
Events in quadrant C5,757,6323,469,538
Events in quadrant D8,710,6353,381,190

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0558480
B0556360
C0559160
D0638910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05460
B05460
C05460
D05460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268681640.610392%
B268681660.617835%
C268683151.172398%
D268683391.261724%

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 30128 26868 40 40 0.13% 0.15%
B 30128 26868 4 4 0.01% 0.01%
C 30128 26868 1 1 0.00% 0.00%
D 30128 26867 81 81 0.27% 0.30%

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 4 2 242618 777.07 1430 1407 310.4
A 5 168 107264 341.02 1430 1407 310.4
A 13 254 44346 138.33 1430 1407 310.4
B 0 189 67729 241.95 1454 1423 274.0
B 4 216 51315 182.06 1454 1423 274.0
B 5 172 26610 91.91 1454 1423 274.0
C 7 247 318582 963.76 1382 1376 329.1
C 0 10 127809 384.14 1382 1376 329.1
C 0 239 8236 20.84 1382 1376 329.1
D 8 195 1645876 4968.26 1406 1359 331.0
D 1 52 590708 1780.49 1406 1359 331.0
D 7 238 460240 1386.33 1406 1359 331.0

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