ASTROSAT CZTI

Data Quality Report

Orbit 21398

Creation date: 2024-06-27T18:27:21.574667
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/AS1T03_140T01_9000003160_21398cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21398cztM0_level2_quad_clean.evt
Size (bytes)834,027,840101,056,320
Size795.4 MB 96.4 MB
Events in quadrant A3,637,705688,642
Events in quadrant B3,703,781695,673
Events in quadrant C4,813,102661,686
Events in quadrant D12,599,287493,288

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155953
B0158842
C0192722
D0426432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7468380.508838%
B7469610.816709%
C74692723.641719%
D7469330144.196010%

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 7753 7469 0 0 0.00% 0.00%
B 7754 7470 8 8 0.10% 0.11%
C 7754 7470 60 60 0.77% 0.80%
D 7753 7468 3155 3155 40.69% 42.25%

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 5 168 140870 767.46 905 888 182.4
A 13 254 13084 66.87 905 888 182.4
A 0 226 8003 39.01 905 888 182.4
B 0 228 46353 262.96 903 882 172.9
B 0 190 23962 133.47 903 882 172.9
B 5 172 20892 115.72 903 882 172.9
C 3 233 1324016 6579.97 858 864 201.1
C 14 238 133907 661.62 858 864 201.1
C 13 61 6062 25.85 858 864 201.1
D 12 235 7824567 44479.4 716 694 175.9
D 1 52 866183 4920.38 716 694 175.9
D 7 38 547681 3109.67 716 694 175.9

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