ASTROSAT CZTI

Data Quality Report

Orbit 20161014_A02_077T01_9000000732_level2

Creation date: 2021-08-24T16:24:43.647012
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A02_077T01_9000000732cztM0_level2_bc.evt modeM0/AS1A02_077T01_9000000732cztM0_level2_quad_clean.evt
Size (bytes)3,246,500,1601,184,353,920
Size3.0 GB 1.1 GB
Events in quadrant A19,294,8827,678,545
Events in quadrant B29,637,8447,494,308
Events in quadrant C18,496,0767,055,186
Events in quadrant D24,628,3167,347,699

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01974270
B02336860
C01778850
D02121370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019250
B019280
C019460
D019140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01410
C01440
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9448211821.251032%
B9407640974.354990%
C838868411.002551%
D9401614021.491236%

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 135460 97949 16 16 0.01% 0.02%
B 135460 97554 769 769 0.57% 0.79%
C 116515 86415 31 31 0.03% 0.04%
D 135460 97490 131 131 0.10% 0.13%

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 50 496198 470.35 4692 4590 1045.2
A 13 6 179709 167.55 4692 4590 1045.2
A 4 2 151862 140.9 4692 4590 1045.2
B 5 172 3065009 3440.03 4620 4480 889.7
B 10 245 2513416 2820.04 4620 4480 889.7
B 15 204 2128412 2387.3 4620 4480 889.7
C 1 16 1833117 2040.66 4084 4028 896.3
C 5 250 274223 301.45 4084 4028 896.3
C 10 34 200062 218.71 4084 4028 896.3
D 2 152 2679612 2461.85 4597 4423 1086.7
D 12 233 1132875 1038.46 4597 4423 1086.7
D 8 195 742274 679.01 4597 4423 1086.7

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