ASTROSAT CZTI

Data Quality Report

Orbit 35333

Creation date: 2022-04-11T11:41:05.935479
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/AS1A11_093T01_9000005064_35333cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35333cztM0_level2_quad_clean.evt
Size (bytes)954,440,640121,043,520
Size910.2 MB 115.4 MB
Events in quadrant A4,266,771789,921
Events in quadrant B13,583,597674,588
Events in quadrant C5,215,631810,683
Events in quadrant D5,231,783765,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184003
B0464992
C0210232
D0217424

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8993170.189036%
B8993376641.877015%
C89931561.734683%
D89921341.490214%

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 12878 8995 10 10 0.08% 0.11%
B 12878 8994 3183 3183 24.72% 35.39%
C 12878 8995 130 130 1.01% 1.45%
D 12878 8995 90 90 0.70% 1.00%

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 10 83 126537 601.89 1051 1032 208.5
A 8 192 22928 105.01 1051 1032 208.5
A 13 6 19383 88.01 1051 1032 208.5
B 5 236 6610310 41069.81 865 844 160.9
B 5 172 3489273 21676.35 865 844 160.9
B 4 232 60465 370.47 865 844 160.9
C 0 10 522284 2267.83 1008 1013 229.9
C 15 214 366221 1588.87 1008 1013 229.9
C 1 23 362061 1570.77 1008 1013 229.9
D 8 195 557428 2298.68 1007 978 242.1
D 12 235 222095 913.43 1007 978 242.1
D 1 52 121500 497.87 1007 978 242.1

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