ASTROSAT CZTI

Data Quality Report

Orbit 26099

Creation date: 2024-06-27T19:24:42.431905
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/AS1A09_018T01_9000003774_26099cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26099cztM0_level2_quad_clean.evt
Size (bytes)473,394,24079,634,880
Size451.5 MB 75.9 MB
Events in quadrant A3,467,059507,210
Events in quadrant B3,527,250514,787
Events in quadrant C3,468,534479,816
Events in quadrant D3,452,387476,103

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138790
B0141670
C0139830
D0137760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6205821.321515%
B62051141.837228%
C62051522.449637%
D6205661.063658%

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 7545 6205 0 0 0.00% 0.00%
B 7545 6205 2 2 0.03% 0.03%
C 7545 6206 0 0 0.00% 0.00%
D 7545 6205 14 14 0.19% 0.23%

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 13 254 9423 47.87 900 884 178.4
A 3 137 7750 38.49 900 884 178.4
A 0 226 7700 38.21 900 884 178.4
B 4 80 21572 125.79 888 871 164.6
B 12 111 19636 114.02 888 871 164.6
B 11 111 17739 102.49 888 871 164.6
C 14 238 138991 704.59 849 858 196.0
C 13 250 12374 58.74 849 858 196.0
C 13 61 5868 25.56 849 858 196.0
D 12 233 41658 202.39 860 842 201.7
D 1 52 39612 192.25 860 842 201.7
D 2 234 24910 119.34 860 842 201.7

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