ASTROSAT CZTI

Data Quality Report

Orbit 29835

Creation date: 2024-06-27T20:08:10.961027
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/AS1T03_291T01_9000004278_29835cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29835cztM0_level2_quad_clean.evt
Size (bytes)731,344,32096,819,840
Size697.5 MB 92.3 MB
Events in quadrant A3,439,164668,153
Events in quadrant B5,309,463672,742
Events in quadrant C3,315,799630,949
Events in quadrant D9,644,987505,581

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141942
B0199262
C0137302
D0332022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6511791.213331%
B65111382.119490%
C6511761.167255%
D6511209932.237751%

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 7586 6512 22 22 0.29% 0.34%
B 7586 6512 2 2 0.03% 0.03%
C 7586 6512 0 0 0.00% 0.00%
D 7586 6512 1931 1931 25.45% 29.65%

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 15 174 93747 547.81 853 837 169.6
A 14 238 27431 156.8 853 837 169.6
A 12 96 13981 77.5 853 837 169.6
B 6 159 1940901 12148.15 849 829 159.7
B 12 111 18764 112.3 849 829 159.7
B 11 111 16995 101.23 849 829 159.7
C 14 238 134786 714.4 808 813 187.5
C 2 114 15662 79.18 808 813 187.5
C 10 22 11509 57.04 808 813 187.5
D 7 80 6493326 39713.99 689 670 163.5
D 8 195 405273 2474.86 689 670 163.5
D 13 189 56548 341.79 689 670 163.5

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