ASTROSAT CZTI

Data Quality Report

Orbit 20190526_A05_117T01_9000002958_level2

Creation date: 2019-05-28T13:04:26.723203
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/AS1A05_117T01_9000002958cztM0_level2_bc.evt modeM0/AS1A05_117T01_9000002958cztM0_level2_quad_clean.evt
Size (bytes)5,681,554,5601,589,906,880
Size5.3 GB 1.5 GB
Events in quadrant A61,069,1959,973,152
Events in quadrant B26,058,74510,605,434
Events in quadrant C36,589,5139,908,651
Events in quadrant D40,576,9269,832,842

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02090
B02090
C02090
D02090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03515660
B02461920
C02909190
D02942630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023240
B023240
C023240
D023240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114348101238.852800%
B11434820211.767412%
C11434868946.028964%
D11434852704.608738%

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 134593 114339 5547 5547 4.12% 4.85%
B 134593 114334 28 28 0.02% 0.02%
C 134593 114338 245 245 0.18% 0.21%
D 134593 114340 832 832 0.62% 0.73%

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 36381239 28265.26 5981 5878 1286.9
A 10 253 555118 426.78 5981 5878 1286.9
A 0 23 447596 343.23 5981 5878 1286.9
B 7 220 1001377 860.42 6219 6078 1156.8
B 4 216 249812 210.71 6219 6078 1156.8
B 3 64 203129 170.35 6219 6078 1156.8
C 3 233 13919657 10174.1 5841 5817 1367.6
C 7 247 159000 112.01 5841 5817 1367.6
C 8 208 39113 24.35 5841 5817 1367.6
D 1 52 7190930 5232.68 6014 5831 1373.1
D 7 238 6615761 4813.8 6014 5831 1373.1
D 12 218 1543157 1119.58 6014 5831 1373.1

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