ASTROSAT CZTI

Data Quality Report

Orbit 24910

Creation date: 2024-06-27T19:11:20.350938
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/AS1A08_003T16_9000003650_24910cztM0_level2.evt modeM0/AS1A08_003T16_9000003650_24910cztM0_level2_quad_clean.evt
Size (bytes)508,610,88090,020,160
Size485.0 MB 85.8 MB
Events in quadrant A3,229,444592,387
Events in quadrant B3,349,130613,863
Events in quadrant C4,476,979553,447
Events in quadrant D3,928,190534,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132022
B0136032
C0173462
D0158762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6189270.436258%
B6189400.646308%
C61892914.701890%
D6189861.389562%

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 7549 6190 0 0 0.00% 0.00%
B 7549 6190 2 2 0.03% 0.03%
C 7549 6190 93 93 1.23% 1.50%
D 7549 6190 32 32 0.42% 0.52%

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 9581 52.34 837 823 167.3
A 3 137 7172 37.94 837 823 167.3
A 0 226 7152 37.82 837 823 167.3
B 0 189 28816 176.51 840 821 158.6
B 4 80 22688 137.87 840 821 158.6
B 12 111 18516 111.57 840 821 158.6
C 7 247 1256292 6849.04 789 796 183.3
C 14 238 128303 695.58 789 796 183.3
C 2 16 7335 35.67 789 796 183.3
D 1 52 692409 3624.42 790 769 190.8
D 8 195 151750 791.19 790 769 190.8
D 2 244 77417 401.66 790 769 190.8

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