ASTROSAT CZTI

Data Quality Report

Orbit 20200121_C05_002T03_9000003448_level2

Creation date: 2020-01-22T12:49:57.218207
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/AS1C05_002T03_9000003448cztM0_level2_bc.evt modeM0/AS1C05_002T03_9000003448cztM0_level2_quad_clean.evt
Size (bytes)392,909,76079,110,720
Size374.7 MB 75.4 MB
Events in quadrant A1,766,291481,589
Events in quadrant B1,843,041487,339
Events in quadrant C2,079,205471,072
Events in quadrant D5,714,980454,294

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158710
B0161390
C0173910
D0284300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71871582.198414%
B71871742.421038%
C71872473.436761%
D71873354.661194%

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 9792 7186 0 0 0.00% 0.00%
B 9792 7185 0 0 0.00% 0.00%
C 9792 7185 0 0 0.00% 0.00%
D 9792 7185 29 29 0.30% 0.40%

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 6 16 15373 155.01 453 447 96.3
A 13 254 10482 104.22 453 447 96.3
A 0 226 3016 26.68 453 447 96.3
B 0 230 26117 303.71 456 448 84.5
B 5 172 17677 203.85 456 448 84.5
B 0 183 14764 169.38 456 448 84.5
C 10 9 347372 3411.8 438 437 101.7
C 7 247 19738 189.81 438 437 101.7
C 0 207 12547 119.09 438 437 101.7
D 7 223 3429367 33199.95 444 429 103.3
D 1 52 395425 3824.46 444 429 103.3
D 12 233 51916 498.51 444 429 103.3

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