ASTROSAT CZTI

Data Quality Report

Orbit 15939

Creation date: 2024-06-27T17:15:22.137976
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_104T03_9000002348_15939cztM0_level2.evt modeM0/AS1A04_104T03_9000002348_15939cztM0_level2_quad_clean.evt
Size (bytes)492,926,40096,030,720
Size470.1 MB 91.6 MB
Events in quadrant A3,445,312613,183
Events in quadrant B3,949,497619,616
Events in quadrant C3,626,370598,747
Events in quadrant D3,428,897586,184

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148682
B0163101
C0151661
D0152051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7044570.809199%
B70441552.200454%
C7044831.178308%
D7044741.050539%

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 8935 7047 9 9 0.10% 0.13%
B 8935 7047 45 45 0.50% 0.64%
C 8935 7047 0 0 0.00% 0.00%
D 8935 7047 68 68 0.76% 0.96%

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 15 239 66160 374.94 857 839 174.2
A 13 34 56205 317.8 857 839 174.2
A 13 210 14625 79.13 857 839 174.2
B 10 245 344964 2083.07 860 837 165.2
B 0 244 57121 340.7 860 837 165.2
B 4 142 41069 243.53 860 837 165.2
C 3 233 294573 1522.23 820 826 193.0
C 14 238 126526 651.39 820 826 193.0
C 7 247 6282 28.27 820 826 193.0
D 2 33 174098 845.99 827 802 204.8
D 15 0 75614 365.21 827 802 204.8
D 2 234 30154 143.29 827 802 204.8

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