ASTROSAT CZTI

Data Quality Report

Orbit 20160218_T01_034T01_9000000334_level2

Creation date: 2016-09-06T17:53:38.307272
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/AS1T01_034T01_9000000334cztM0_level2_bc.evt modeM0/AS1T01_034T01_9000000334cztM0_level2_quad_clean.evt
Size (bytes)1,530,020,160794,378,880
Size1.4 GB 757.6 MB
Events in quadrant A12,357,2515,085,339
Events in quadrant B10,469,8635,198,245
Events in quadrant C9,440,5865,239,252
Events in quadrant D10,606,9315,059,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010180
B010180
C010180
D010180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01134230
B01055370
C01030720
D01087230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B190
C190
D190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507196441.269741%
B507191330.262229%
C507211440.283906%
D507216261.234203%

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 58207 50724 142 142 0.24% 0.28%
B 58207 50724 1 1 0.00% 0.00%
C 58207 50723 4 4 0.01% 0.01%
D 58207 50723 117 117 0.20% 0.23%

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 0 231 1386058 2935.45 2252 2205 471.4
A 0 199 1185706 2510.46 2252 2205 471.4
A 15 171 648314 1370.53 2252 2205 471.4
B 5 68 882809 2146.72 2327 2261 410.2
B 0 234 216541 522.4 2327 2261 410.2
B 0 198 181416 436.77 2327 2261 410.2
C 10 82 158427 327.39 2280 2243 477.1
C 10 34 61665 124.56 2280 2243 477.1
C 1 192 56773 114.3 2280 2243 477.1
D 2 31 675538 1378.18 2249 2180 488.6
D 13 174 445348 907.04 2249 2180 488.6
D 13 88 276043 560.52 2249 2180 488.6

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