ASTROSAT CZTI

Data Quality Report

Orbit 04876

Creation date: 2024-06-27T14:48:17.361081
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/AS1G05_009T02_9000000618_04876cztM0_level2.evt modeM0/AS1G05_009T02_9000000618_04876cztM0_level2_quad_clean.evt
Size (bytes)529,629,12054,492,480
Size505.1 MB 52.0 MB
Events in quadrant A3,598,131308,835
Events in quadrant B3,693,787308,180
Events in quadrant C3,136,621302,534
Events in quadrant D5,166,146272,343

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150083
B0153032
C0136832
D0197482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65571952.973921%
B65571392.119872%
C6557751.143816%
D655766210.096081%

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 7757 6557 58 58 0.75% 0.88%
B 7757 6557 12 12 0.15% 0.18%
C 7757 6557 0 0 0.00% 0.00%
D 7757 6557 506 506 6.52% 7.72%

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 13 251 388280 2310.65 827 809 167.7
A 8 15 15071 85.05 827 809 167.7
A 0 50 9363 51.01 827 809 167.7
B 4 80 127111 796.64 835 817 158.5
B 15 204 103138 645.42 835 817 158.5
B 10 16 86556 540.83 835 817 158.5
C 12 4 7357 35.72 801 805 183.4
C 13 61 6734 32.32 801 805 183.4
C 14 67 2549 9.51 801 805 183.4
D 13 235 1206554 6320.18 779 756 190.8
D 2 136 486189 2544.39 779 756 190.8
D 2 234 239180 1249.7 779 756 190.8

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