ASTROSAT CZTI

Data Quality Report

Orbit 12843

Creation date: 2024-06-27T16:33:02.308445
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_071T01_9000001888_12843cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12843cztM0_level2_quad_clean.evt
Size (bytes)526,158,720104,653,440
Size501.8 MB 99.8 MB
Events in quadrant A3,569,225666,136
Events in quadrant B4,578,500664,881
Events in quadrant C3,473,801668,382
Events in quadrant D3,797,791641,854

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158533
B0187062
C0156642
D0166932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7591390.513766%
B75913664.821499%
C7591240.316164%
D7591650.856277%

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 7817 7593 0 0 0.00% 0.00%
B 7817 7593 162 162 2.07% 2.13%
C 7817 7593 2 2 0.03% 0.03%
D 7817 7593 27 27 0.35% 0.36%

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 12 189 90857 487.62 903 883 184.5
A 0 226 7865 37.84 903 883 184.5
A 12 194 6856 32.37 903 883 184.5
B 4 239 604544 3517.42 891 868 171.6
B 10 245 158469 918.29 891 868 171.6
B 0 219 107230 619.73 891 868 171.6
C 14 234 17308 79.95 885 888 205.4
C 13 61 6410 26.89 885 888 205.4
C 8 128 4514 17.66 885 888 205.4
D 1 52 196614 921.69 878 854 212.4
D 13 172 101519 473.96 878 854 212.4
D 2 136 57423 266.34 878 854 212.4

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