ASTROSAT CZTI

Data Quality Report

Orbit 22483

Creation date: 2024-06-27T18:41:48.272579
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/AS1A07_144T02_9000003340_22483cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22483cztM0_level2_quad_clean.evt
Size (bytes)812,629,440140,817,600
Size775.0 MB 134.3 MB
Events in quadrant A6,175,2821,129,650
Events in quadrant B6,453,7291,158,321
Events in quadrant C1,876,099281
Events in quadrant D9,211,3181,073,176

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270102
B0277912
C0130202
D0364642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13015770.591625%
B130161661.275353%
C1301613016100.000000%
D130162321.782422%

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 14145 13016 2 2 0.01% 0.02%
B 14146 13017 5 5 0.04% 0.04%
C 14145 13015 0 0 0.00% 0.00%
D 14146 13018 149 149 1.05% 1.14%

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 6 240 30003 89.37 1585 1552 318.3
A 3 1 23266 68.21 1585 1552 318.3
A 13 254 19764 57.21 1585 1552 318.3
B 15 33 157918 516.66 1587 1548 302.7
B 0 229 40318 128.1 1587 1548 302.7
B 12 111 37004 117.15 1587 1548 302.7
C 7 119 1851651 758203.47 4 4 2.4
C 7 226 3846 1573.2 4 4 2.4
C 14 238 2031 830.01 4 4 2.4
D 1 20 2249792 6049.6 1531 1491 371.6
D 1 52 940255 2525.97 1531 1491 371.6
D 7 222 82866 218.96 1531 1491 371.6

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