ASTROSAT CZTI

Data Quality Report

Orbit 10625

Creation date: 2024-06-27T16:01:39.685477
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/AS1T01_191T01_9000001536_10625cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10625cztM0_level2_quad_clean.evt
Size (bytes)467,628,48084,660,480
Size446.0 MB 80.7 MB
Events in quadrant A3,143,240538,262
Events in quadrant B3,950,766542,517
Events in quadrant C3,022,042542,082
Events in quadrant D3,622,826505,740

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131892
B0158461
C0131181
D0149101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244340.544523%
B62441632.610506%
C6244250.400384%
D6244570.912876%

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 7484 6245 0 0 0.00% 0.00%
B 7484 6245 71 71 0.95% 1.14%
C 7484 6245 1 1 0.01% 0.02%
D 7484 6245 18 18 0.24% 0.29%

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 13 251 146630 923.43 767 754 158.0
A 1 162 20395 124.33 767 754 158.0
A 13 14 8568 49.46 767 754 158.0
B 4 239 716027 4906.6 769 754 145.8
B 0 219 95202 647.89 769 754 145.8
B 0 85 66432 450.54 769 754 145.8
C 4 254 100245 583.12 744 751 170.6
C 12 4 11070 60.48 744 751 170.6
C 14 67 9870 53.44 744 751 170.6
D 2 16 531523 3016.34 732 714 176.0
D 13 104 80140 451.34 732 714 176.0
D 8 195 76832 432.54 732 714 176.0

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