ASTROSAT CZTI

Data Quality Report

Orbit 15348

Creation date: 2024-06-27T17:07:14.724685
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/AS1T02_073T01_9000002260_15348cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15348cztM0_level2_quad_clean.evt
Size (bytes)45,319,68012,706,560
Size43.2 MB 12.1 MB
Events in quadrant A329,43183,802
Events in quadrant B330,62085,679
Events in quadrant C345,50682,957
Events in quadrant D321,10480,506

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012950
B013020
C013520
D012800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62530.480000%
B62500.000000%
C62500.000000%
D62510.160000%

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 626 626 1 1 0.16% 0.16%
B 626 626 0 0 0.00% 0.00%
C 626 626 0 0 0.00% 0.00%
D 626 626 0 0 0.00% 0.00%

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 4 2 3018 150.7 84 81 19.5
A 9 143 1793 87.84 84 81 19.5
A 0 226 719 32.74 84 81 19.5
B 12 111 1908 97.63 83 81 18.7
B 3 209 1759 89.67 83 81 18.7
B 11 111 1693 86.14 83 81 18.7
C 3 233 17282 802.49 83 84 21.4
C 7 247 1267 55.2 83 84 21.4
C 13 61 548 21.65 83 84 21.4
D 2 234 2784 121.36 84 80 22.3
D 7 38 1728 73.96 84 80 22.3
D 14 226 880 35.9 84 80 22.3

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