ASTROSAT CZTI

Data Quality Report

Orbit 22071

Creation date: 2024-06-27T18:36:12.119252
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/AS1A07_138T08_9000003268_22071cztM0_level2.evt modeM0/AS1A07_138T08_9000003268_22071cztM0_level2_quad_clean.evt
Size (bytes)449,049,600112,161,600
Size428.2 MB 107.0 MB
Events in quadrant A3,191,635745,369
Events in quadrant B3,278,466760,253
Events in quadrant C3,446,186727,211
Events in quadrant D3,244,236713,684

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135270
B0138110
C0143820
D0138650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6456570.882900%
B6456620.960347%
C64561161.796778%
D6456380.588600%

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 7576 6457 0 0 0.00% 0.00%
B 7576 6457 4 4 0.05% 0.06%
C 7576 6457 0 0 0.00% 0.00%
D 7576 6457 3 3 0.04% 0.05%

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 13 254 9501 53.14 826 810 163.5
A 15 174 7693 42.09 826 810 163.5
A 0 226 7039 38.09 826 810 163.5
B 3 64 25842 163.79 822 803 152.9
B 12 111 17863 111.59 822 803 152.9
B 11 111 16015 99.5 822 803 152.9
C 9 54 177157 945.63 805 811 186.5
C 14 238 129399 689.53 805 811 186.5
C 13 61 5636 25.87 805 811 186.5
D 1 52 114854 580.53 813 788 196.5
D 2 234 23540 115.79 813 788 196.5
D 13 172 20065 98.11 813 788 196.5

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