ASTROSAT CZTI

Data Quality Report

Orbit 28750

Creation date: 2024-06-27T19:55:47.699857
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/AS1A10_123T08_9000004126_28750cztM0_level2.evt modeM0/AS1A10_123T08_9000004126_28750cztM0_level2_quad_clean.evt
Size (bytes)793,512,00081,181,440
Size756.8 MB 77.4 MB
Events in quadrant A3,333,930524,678
Events in quadrant B3,376,472533,136
Events in quadrant C10,441,964458,176
Events in quadrant D6,429,520477,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140182
B0141511
C0356981
D0238101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66591692.537919%
B66591592.387746%
C6660257838.708709%
D666076111.426426%

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 7384 6659 5 5 0.07% 0.08%
B 7384 6659 22 22 0.30% 0.33%
C 7385 6660 1756 1756 23.78% 26.37%
D 7385 6660 633 633 8.57% 9.50%

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 14 239 117971 706.83 824 807 165.8
A 15 174 37463 221.14 824 807 165.8
A 13 254 14397 81.99 824 807 165.8
B 5 255 144223 937.76 810 789 153.0
B 0 190 25471 161.37 810 789 153.0
B 4 80 22411 141.36 810 789 153.0
C 3 233 7517285 46110.79 708 710 163.0
C 14 238 127078 775.21 708 710 163.0
C 14 254 21084 124.99 708 710 163.0
D 8 195 1607972 8935.99 762 741 179.9
D 1 52 923912 5132.71 762 741 179.9
D 12 233 919963 5110.75 762 741 179.9

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