ASTROSAT CZTI

Data Quality Report

Orbit 27027

Creation date: 2024-06-27T19:35:42.028259
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_120T02_9000003904_27027cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27027cztM0_level2_quad_clean.evt
Size (bytes)583,208,640103,576,320
Size556.2 MB 98.8 MB
Events in quadrant A5,544,377644,560
Events in quadrant B3,452,901708,881
Events in quadrant C3,397,919674,703
Events in quadrant D4,811,521639,489

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208680
B0142820
C0141400
D0187780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67315638.364285%
B6731711.054821%
C67311001.485663%
D67302804.160475%

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 7661 6732 488 488 6.37% 7.25%
B 7661 6732 5 5 0.07% 0.07%
C 7661 6732 0 0 0.00% 0.00%
D 7659 6730 215 215 2.81% 3.19%

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 14 235 2288755 13616.29 836 821 168.0
A 8 192 23058 132.34 836 821 168.0
A 13 254 10318 56.52 836 821 168.0
B 12 111 19854 113.75 868 850 167.1
B 15 222 19138 109.46 868 850 167.1
B 0 219 18993 108.6 868 850 167.1
C 14 238 134222 675.96 835 844 197.3
C 15 208 6156 26.92 835 844 197.3
C 14 225 5768 24.95 835 844 197.3
D 1 52 1548565 7840.98 821 801 197.4
D 12 233 107491 540.49 821 801 197.4
D 2 250 42138 209.41 821 801 197.4

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