ASTROSAT CZTI

Data Quality Report

Orbit 20170416_G07_084T03_9000001174_level2

Creation date: 2017-09-23T18:11:21.673900
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/AS1G07_084T03_9000001174cztM0_level2.evt modeM0/AS1G07_084T03_9000001174cztM0_level2_quad_clean.evt
Size (bytes)1,333,278,720381,680,640
Size1.2 GB 364.0 MB
Events in quadrant A9,461,7052,509,593
Events in quadrant B9,797,9002,558,493
Events in quadrant C9,350,5792,550,167
Events in quadrant D10,322,5832,473,157

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437100
B0441020
C0434300
D0466240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04340
B04340
C04340
D04340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A213651260.589750%
B213651240.580388%
C21365860.402527%
D213651990.931430%

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 23875 21369 34 34 0.14% 0.16%
B 23875 21369 1 1 0.00% 0.00%
C 23875 21369 4 4 0.02% 0.02%
D 23875 21369 118 118 0.49% 0.55%

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 15 236 127504 254.87 2421 2360 491.0
A 0 226 22440 40.9 2421 2360 491.0
A 12 194 21938 39.87 2421 2360 491.0
B 0 214 114999 243.11 2445 2378 463.2
B 4 48 50865 104.67 2445 2378 463.2
B 12 111 50643 104.19 2445 2378 463.2
C 1 16 56099 98.2 2377 2385 547.0
C 13 61 18276 29.05 2377 2385 547.0
C 8 128 11124 15.98 2377 2385 547.0
D 2 14 383563 610.35 2346 2292 624.7
D 1 52 231990 367.71 2346 2292 624.7
D 12 233 213596 338.26 2346 2292 624.7

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