ASTROSAT CZTI

Data Quality Report

Orbit 20151115_P01_147T01_9000000106_level2

Creation date: 2017-10-26T23:54:20.781291
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/AS1P01_147T01_9000000106cztM0_level2.evt modeM0/AS1P01_147T01_9000000106cztM0_level2_quad_clean.evt
Size (bytes)9,576,852,480649,296,000
Size8.9 GB 619.2 MB
Events in quadrant A67,535,1614,023,763
Events in quadrant B71,939,4384,081,445
Events in quadrant C71,088,4343,951,945
Events in quadrant D75,790,6323,761,812

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02405030
B02535210
C02508680
D02650740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011380
B011380
C011360
D011360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A561263820.680611%
B561023980.709422%
C560382320.414005%
D5610418753.342008%

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 82532 56195 2504 2504 3.03% 4.46%
B 82532 56179 3024 3024 3.66% 5.38%
C 82532 56119 2606 2606 3.16% 4.64%
D 82532 56178 6353 6353 7.70% 11.31%

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 15 171 857849 202.28 17257 17381 4155.0
A 10 230 165558 35.66 17257 17381 4155.0
A 15 17 144008 30.48 17257 17381 4155.0
B 5 247 1495056 349.41 17999 18088 4227.1
B 7 221 793213 183.37 17999 18088 4227.1
B 0 207 394878 89.14 17999 18088 4227.1
C 3 95 1695315 371.46 16258 16843 4518.6
C 3 31 1415098 309.44 16258 16843 4518.6
C 3 15 1223210 266.98 16258 16843 4518.6
D 0 25 6041652 1243.29 15606 16219 4846.3
D 6 226 4753932 977.59 15606 16219 4846.3
D 9 52 3434897 705.41 15606 16219 4846.3

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