ASTROSAT CZTI

Data Quality Report

Orbit 00609

Creation date: 2024-06-27T14:00:30.941416
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/AS1P01_126T01_9000000084_00609cztM0_level2.evt modeM0/AS1P01_126T01_9000000084_00609cztM0_level2_quad_clean.evt
Size (bytes)784,869,12059,195,520
Size748.5 MB 56.5 MB
Events in quadrant A6,028,476359,862
Events in quadrant B5,935,898372,991
Events in quadrant C5,454,625367,255
Events in quadrant D6,030,425353,745

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213532
B0210281
C0196271
D0213191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4822651.347988%
B4822200.414766%
C482220.041477%
D4822370.767316%

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 6977 4823 190 190 2.72% 3.94%
B 6977 4823 129 129 1.85% 2.67%
C 6977 4823 51 51 0.73% 1.06%
D 6977 4823 186 186 2.67% 3.86%

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 15 171 221514 682.0 1468 1451 322.7
A 0 149 58013 175.29 1468 1451 322.7
A 0 238 34452 102.27 1468 1451 322.7
B 7 221 290534 849.64 1447 1454 340.2
B 5 191 45116 128.33 1447 1454 340.2
B 8 4 21952 60.25 1447 1454 340.2
C 1 1 85005 222.25 1348 1400 376.2
C 7 190 21317 52.95 1348 1400 376.2
C 10 19 18905 46.54 1348 1400 376.2
D 1 4 464140 1131.35 1306 1356 409.1
D 13 221 165779 401.96 1306 1356 409.1
D 12 237 76526 183.76 1306 1356 409.1

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