ASTROSAT CZTI

Data Quality Report

Orbit 13734

Creation date: 2024-06-27T16:45:19.835209
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_062T01_9000002038_13734cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13734cztM0_level2_quad_clean.evt
Size (bytes)506,669,760108,823,680
Size483.2 MB 103.8 MB
Events in quadrant A3,111,061715,065
Events in quadrant B3,414,795715,594
Events in quadrant C4,528,595723,383
Events in quadrant D3,863,119702,478

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133473
B0142142
C0175302
D0157932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6303400.634618%
B6303801.269237%
C63034096.488974%
D6303721.142313%

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 7534 6305 2 2 0.03% 0.03%
B 7534 6305 10 10 0.13% 0.16%
C 7534 6305 269 269 3.57% 4.27%
D 7534 6305 19 19 0.25% 0.30%

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 15 69 12835 74.88 801 788 160.9
A 0 23 11145 64.38 801 788 160.9
A 0 226 7862 43.97 801 788 160.9
B 8 250 153623 1011.87 804 787 151.0
B 0 219 63870 417.65 804 787 151.0
B 4 173 20471 130.32 804 787 151.0
C 4 254 1397827 7767.64 776 781 179.9
C 3 233 97258 536.42 776 781 179.9
C 14 234 5677 27.22 776 781 179.9
D 5 222 396355 2089.68 783 762 189.3
D 8 195 287487 1514.6 783 762 189.3
D 10 157 93765 491.28 783 762 189.3

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