ASTROSAT CZTI

Data Quality Report

Orbit 20170117_G06_164T01_9000000968_level2

Creation date: 2017-09-22T21:27:17.920385
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/AS1G06_164T01_9000000968cztM0_level2.evt modeM0/AS1G06_164T01_9000000968cztM0_level2_quad_clean.evt
Size (bytes)2,093,201,280482,702,400
Size1.9 GB 460.3 MB
Events in quadrant A15,339,8853,100,762
Events in quadrant B15,095,0273,238,536
Events in quadrant C13,787,8883,130,711
Events in quadrant D17,040,9642,987,263

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0677320
B0667630
C0640060
D0722280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06460
B06460
C06460
D06460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3147520226.424146%
B314752410.765687%
C314751010.320890%
D314756792.157268%

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 42314 31483 242 242 0.57% 0.77%
B 42314 31483 18 18 0.04% 0.06%
C 42314 31483 2 2 0.00% 0.01%
D 42314 31483 451 451 1.07% 1.43%

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 14 111 1604874 2258.4 3543 3464 709.1
A 8 15 52978 69.83 3543 3464 709.1
A 13 14 46529 60.73 3543 3464 709.1
B 0 219 362460 525.9 3664 3575 682.4
B 0 214 343486 498.09 3664 3575 682.4
B 0 228 96110 135.6 3664 3575 682.4
C 4 254 43211 49.38 3507 3512 803.9
C 7 247 39075 44.24 3507 3512 803.9
C 13 61 27765 30.17 3507 3512 803.9
D 12 233 1506744 1777.29 3480 3367 845.9
D 8 195 1199864 1414.5 3480 3367 845.9
D 1 83 392287 459.78 3480 3367 845.9

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