ASTROSAT CZTI

Data Quality Report

Orbit 14376

Creation date: 2024-06-27T16:54:14.826081
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/AS1A04_149T01_9000002118_14376cztM0_level2.evt modeM0/AS1A04_149T01_9000002118_14376cztM0_level2_quad_clean.evt
Size (bytes)553,409,280103,852,800
Size527.8 MB 99.0 MB
Events in quadrant A3,628,463663,177
Events in quadrant B3,987,064664,666
Events in quadrant C4,067,860657,555
Events in quadrant D4,559,320629,718

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158093
B0166672
C0162862
D0189132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76132182.863523%
B76132953.874951%
C76132002.627085%
D76134646.094838%

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 9035 7614 2 2 0.02% 0.03%
B 9035 7614 28 28 0.31% 0.37%
C 9035 7614 1 1 0.01% 0.01%
D 9035 7614 255 255 2.82% 3.35%

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 12 189 33373 172.82 928 910 187.8
A 8 15 16028 80.48 928 910 187.8
A 15 69 12806 63.33 928 910 187.8
B 0 229 266657 1504.71 923 898 176.6
B 0 189 41200 228.19 923 898 176.6
B 0 219 33112 182.39 923 898 176.6
C 3 233 520500 2502.27 908 912 207.6
C 13 61 6464 26.74 908 912 207.6
C 14 234 3997 14.86 908 912 207.6
D 12 110 624677 2956.35 893 868 211.0
D 10 199 448636 2122.06 893 868 211.0
D 2 120 65925 308.32 893 868 211.0

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