ASTROSAT CZTI

Data Quality Report

Orbit 10854

Creation date: 2024-06-27T16:04:33.192126
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/AS1A03_086T01_9000001568_10854cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10854cztM0_level2_quad_clean.evt
Size (bytes)507,960,00068,869,440
Size484.4 MB 65.7 MB
Events in quadrant A5,103,695414,519
Events in quadrant B3,928,728431,592
Events in quadrant C2,724,932437,170
Events in quadrant D3,249,068412,482

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191272
B0152661
C0115191
D0131271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55695529.912013%
B55693105.566529%
C5569250.448914%
D55691122.011133%

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 6799 5570 305 305 4.49% 5.48%
B 6799 5570 180 180 2.65% 3.23%
C 6799 5570 0 0 0.00% 0.00%
D 6799 5570 56 56 0.82% 1.01%

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 8 5 2310788 16566.83 694 682 139.4
A 15 223 22138 153.87 694 682 139.4
A 13 251 18754 129.6 694 682 139.4
B 4 239 1072912 7992.57 706 693 134.2
B 0 214 32290 235.53 706 693 134.2
B 0 187 27390 199.01 706 693 134.2
C 13 61 5292 28.82 697 704 159.2
C 14 234 3129 15.23 697 704 159.2
C 7 221 2058 8.5 697 704 159.2
D 12 233 145752 876.13 697 680 165.6
D 1 52 120187 721.74 697 680 165.6
D 2 14 94344 565.66 697 680 165.6

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