ASTROSAT CZTI

Data Quality Report

Orbit 20171002_A04_055T01_9000001574_level2

Creation date: 2017-10-18T18:15:57.039179
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_055T01_9000001574cztM0_level2.evt modeM0/AS1A04_055T01_9000001574cztM0_level2_quad_clean.evt
Size (bytes)6,974,144,6401,221,456,960
Size6.5 GB 1.1 GB
Events in quadrant A59,805,8387,678,079
Events in quadrant B56,554,4637,869,247
Events in quadrant C38,263,9908,115,423
Events in quadrant D50,971,6747,612,373

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01330
C01330
D01330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017020
B017020
C017020
D017020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02332340
B02237870
C01735600
D02078270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8342759777.164347%
B8342755886.698071%
C834277540.903784%
D8342728443.408968%

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 96587 83438 3736 3736 3.87% 4.48%
B 96588 83440 3162 3162 3.27% 3.79%
C 96588 83442 175 175 0.18% 0.21%
D 96588 83440 1727 1727 1.79% 2.07%

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 5 20854474 10808.36 9600 9412 1928.6
A 5 16 694752 355.36 9600 9412 1928.6
A 15 223 535964 273.02 9600 9412 1928.6
B 4 239 17084725 9520.26 9666 9448 1793.6
B 0 214 446854 243.87 9666 9448 1793.6
B 0 219 428750 233.78 9666 9448 1793.6
C 4 254 779335 352.19 9546 9582 2185.6
C 0 207 112815 47.23 9546 9582 2185.6
C 14 234 104915 43.62 9546 9582 2185.6
D 1 52 6465608 2849.58 9463 9195 2265.7
D 8 195 2220812 976.11 9463 9195 2265.7
D 10 199 1278714 560.31 9463 9195 2265.7

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