ASTROSAT CZTI

Data Quality Report

Orbit 30628

Creation date: 2024-06-27T20:17:52.092330
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/AS1A10_071T05_9000004412_30628cztM0_level2.evt modeM0/AS1A10_071T05_9000004412_30628cztM0_level2_quad_clean.evt
Size (bytes)376,104,96057,545,280
Size358.7 MB 54.9 MB
Events in quadrant A2,273,467381,633
Events in quadrant B3,378,083379,750
Events in quadrant C2,233,895353,170
Events in quadrant D3,229,427341,615

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091571
B0127591
C089991
D0126521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4055210.517879%
B4055481.183724%
C4055521.282367%
D4055601.479655%

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 4055 4055 0 0 0.00% 0.00%
B 4055 4055 0 0 0.00% 0.00%
C 4055 4055 4 4 0.10% 0.10%
D 4055 4055 40 40 0.99% 0.99%

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 8 192 10665 86.91 586 578 116.1
A 13 254 7625 60.72 586 578 116.1
A 3 137 5161 39.49 586 578 116.1
B 6 159 1088120 10103.78 573 561 107.6
B 0 190 37674 344.79 573 561 107.6
B 12 111 12418 110.16 573 561 107.6
C 14 238 90889 720.19 540 545 125.4
C 0 10 21976 170.84 540 545 125.4
C 2 114 9776 73.59 540 545 125.4
D 8 195 955768 7401.09 550 537 129.1
D 1 52 152336 1176.13 550 537 129.1
D 13 249 15825 118.45 550 537 129.1

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