ASTROSAT CZTI

Data Quality Report

Orbit 20200501_A08_003T02_9000003630_level2

Creation date: 2020-05-02T15:15:03.793830
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/AS1A08_003T02_9000003630cztM0_level2_bc.evt modeM0/AS1A08_003T02_9000003630cztM0_level2_quad_clean.evt
Size (bytes)910,920,960325,045,440
Size868.7 MB 310.0 MB
Events in quadrant A5,366,0952,050,763
Events in quadrant B5,652,1352,069,118
Events in quadrant C5,244,6761,962,955
Events in quadrant D9,484,0591,911,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0555720
B0566860
C0559430
D0680170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05480
D05480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A269123571.326546%
B269124581.701843%
C269125812.158888%
D269129423.500297%

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 29737 26913 0 0 0.00% 0.00%
B 29737 26912 2 2 0.01% 0.01%
C 29737 26913 10 10 0.03% 0.04%
D 29737 26914 76 76 0.26% 0.28%

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 13 254 37271 117.17 1386 1354 306.5
A 0 226 8757 24.15 1386 1354 306.5
A 12 194 8481 23.25 1386 1354 306.5
B 0 189 123879 456.11 1393 1356 268.6
B 10 251 79741 291.8 1393 1356 268.6
B 7 202 53149 192.81 1393 1356 268.6
C 2 16 97081 305.23 1325 1314 313.8
C 7 247 53345 165.83 1325 1314 313.8
C 13 61 7414 19.44 1325 1314 313.8
D 8 195 2090738 6590.19 1346 1294 317.1
D 5 222 1766320 5566.96 1346 1294 317.1
D 1 52 186340 583.64 1346 1294 317.1

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