ASTROSAT CZTI

Data Quality Report

Orbit 31222

Creation date: 2024-06-27T20:25:14.020115
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/AS1C06_002T02_9000004518_31222cztM0_level2.evt modeM0/AS1C06_002T02_9000004518_31222cztM0_level2_quad_clean.evt
Size (bytes)763,165,440133,822,080
Size727.8 MB 127.6 MB
Events in quadrant A3,555,253968,801
Events in quadrant B7,983,375861,424
Events in quadrant C4,084,840900,813
Events in quadrant D7,047,794864,998

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146682
B0280662
C0161962
D0254412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65411091.666412%
B6542139521.323754%
C65423004.585754%
D65426089.293794%

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 7816 6542 0 0 0.00% 0.00%
B 7817 6543 835 835 10.68% 12.76%
C 7817 6543 91 91 1.16% 1.39%
D 7817 6543 504 504 6.45% 7.70%

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 16 16428 85.88 918 901 180.8
A 13 254 12768 65.64 918 901 180.8
A 0 226 8047 39.53 918 901 180.8
B 4 80 2620873 17226.3 829 811 152.1
B 6 159 1665727 10946.44 829 811 152.1
B 0 190 255759 1676.22 829 811 152.1
C 0 10 403212 2082.67 843 850 193.2
C 14 238 140597 723.35 843 850 193.2
C 15 208 116869 600.53 843 850 193.2
D 8 195 3471707 15803.41 855 843 219.6
D 13 249 158437 717.55 855 843 219.6
D 2 250 94669 427.21 855 843 219.6

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