ASTROSAT CZTI

Data Quality Report

Orbit 00996

Creation date: 2024-06-27T14:05:54.249691
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/AS1P01_998T02_9000000190_00996cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_00996cztM0_level2_quad_clean.evt
Size (bytes)995,008,320108,740,160
Size948.9 MB 103.7 MB
Events in quadrant A7,756,535724,332
Events in quadrant B7,810,865737,425
Events in quadrant C7,316,098704,455
Events in quadrant D6,838,528693,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274541
B0276341
C0261341
D0247383

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62071221.965523%
B6207510.821653%
C6207290.467214%
D6207590.950540%

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 7292 6208 363 363 4.98% 5.85%
B 7292 6208 252 252 3.46% 4.06%
C 7292 6208 144 144 1.97% 2.32%
D 7292 6208 134 134 1.84% 2.16%

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 4 2 354996 764.42 1927 1942 461.9
A 11 242 10050 17.56 1927 1942 461.9
A 11 79 8170 13.48 1927 1942 461.9
B 8 234 79578 164.79 1985 1992 470.8
B 5 249 72039 148.78 1985 1992 470.8
B 0 220 57390 117.67 1985 1992 470.8
C 15 241 297941 595.42 1781 1838 497.3
C 3 111 25235 47.05 1781 1838 497.3
C 3 79 24505 45.58 1781 1838 497.3
D 1 4 135678 257.37 1754 1798 520.2
D 12 188 44748 82.57 1754 1798 520.2
D 13 170 34079 62.06 1754 1798 520.2

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