ASTROSAT CZTI

Data Quality Report

Orbit 20240826_C09_004T05_9000006416_level2

Creation date: 2024-08-29T10:50:01.280497
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/AS1C09_004T05_9000006416cztM0_level2.fits modeM0/AS1C09_004T05_9000006416cztM0_level2_quad_clean.evt
Size (bytes)793,941,1201,024,724,160
Size757.2 MB 977.3 MB
Events in quadrant A4,988,9067,162,508
Events in quadrant B2,483,8683,398,275
Events in quadrant C5,167,9507,075,217
Events in quadrant D4,401,5106,427,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04014870
B02027850
C02140910
D02798570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020560
B020560
C020560
D020560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10173046384.559127%
B1016855479253.884054%
C1017308730.858154%
D10173231163.062950%

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 111002 101674 0 0 0.00% 0.00%
B 111001 68898 0 0 0.00% 0.00%
C 111002 101728 0 0 0.00% 0.00%
D 111002 101621 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 7 110 4095 8.76 1303 1221 327.9
A 14 95 3837 7.98 1303 1221 327.9
A 0 29 3799 7.86 1303 1221 327.9
B 2 9 2392 13.65 659 629 129.1
B 2 8 1908 9.91 659 629 129.1
B 3 17 1841 9.39 659 629 129.1
C 1 81 3936 7.54 1368 1275 353.0
C 3 202 3908 7.46 1368 1275 353.0
C 1 80 3792 7.13 1368 1275 353.0
D 10 189 3246 5.89 1265 1142 356.9
D 10 113 3207 5.79 1265 1142 356.9
D 15 47 3172 5.69 1265 1142 356.9

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