ASTROSAT CZTI

Data Quality Report

Orbit 14427

Creation date: 2024-06-27T16:55:02.051263
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/AS1G08_025T01_9000002130_14427cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14427cztM0_level2_quad_clean.evt
Size (bytes)565,084,80099,192,960
Size538.9 MB 94.6 MB
Events in quadrant A3,133,182665,846
Events in quadrant B3,710,133653,921
Events in quadrant C3,873,076649,547
Events in quadrant D5,966,992591,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136303
B0153082
C0156432
D0222602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6350350.551181%
B63501492.346457%
C63501492.346457%
D6350105016.535433%

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 7526 6351 0 0 0.00% 0.00%
B 7526 6351 47 47 0.62% 0.74%
C 7526 6351 56 56 0.74% 0.88%
D 7526 6351 456 456 6.06% 7.18%

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 15 25629 151.84 803 787 163.6
A 12 189 11633 66.29 803 787 163.6
A 0 226 7455 40.76 803 787 163.6
B 0 182 260195 1736.07 798 779 149.4
B 3 209 103030 684.29 798 779 149.4
B 10 245 62634 413.95 798 779 149.4
C 3 233 822437 4588.69 778 783 179.1
C 0 207 18125 96.85 778 783 179.1
C 13 61 5654 27.2 778 783 179.1
D 13 122 2088421 11582.46 713 698 180.2
D 15 0 328413 1818.13 713 698 180.2
D 2 120 280675 1553.28 713 698 180.2

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