ASTROSAT CZTI

Data Quality Report

Orbit 01158

Creation date: 2024-06-27T14:08:23.949137
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_997T03_9000000216_01158cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01158cztM0_level2_quad_clean.evt
Size (bytes)982,863,36098,789,760
Size937.3 MB 94.2 MB
Events in quadrant A7,445,315659,646
Events in quadrant B7,682,810660,952
Events in quadrant C7,738,098615,804
Events in quadrant D6,487,289621,581

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265672
B0271991
C0274101
D0237141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A621560.096541%
B621580.128721%
C62152514.038616%
D621560.096541%

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 7460 6216 154 154 2.06% 2.48%
B 7460 6216 219 219 2.94% 3.52%
C 7460 6216 389 389 5.21% 6.26%
D 7460 6216 68 68 0.91% 1.09%

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 32 127399 277.03 1905 1921 452.9
A 12 243 9350 16.4 1905 1921 452.9
A 11 79 8794 15.17 1905 1921 452.9
B 15 22 58599 122.31 1970 1984 462.9
B 8 4 43951 90.67 1970 1984 462.9
B 6 53 31176 63.07 1970 1984 462.9
C 9 52 673902 1398.13 1729 1779 480.7
C 15 241 271287 560.62 1729 1779 480.7
C 3 111 20310 38.55 1729 1779 480.7
D 10 125 44898 81.77 1714 1768 527.5
D 2 152 20094 34.74 1714 1768 527.5
D 10 215 13432 22.11 1714 1768 527.5

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