ASTROSAT CZTI

Data Quality Report

Orbit 20171115_G08_009T01_9000001692_level2

Creation date: 2025-01-04T16:36:00.958330
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/AS1G08_009T01_9000001692cztM0_level2.fits modeM0/AS1G08_009T01_9000001692cztM0_level2_quad_clean.evt
Size (bytes)991,719,360950,247,360
Size945.8 MB 906.2 MB
Events in quadrant A5,958,1785,725,218
Events in quadrant B5,814,4205,685,152
Events in quadrant C6,049,6885,568,770
Events in quadrant D4,948,5204,544,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03143020
B02786660
C02176570
D03314490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01670
B01670
C01670
D01670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021600
B021600
C021600
D021600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10583264366.081336%
B10583254145.115655%
C1058326880.650087%
D1058321231611.637312%

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 122668 105649 0 0 0.00% 0.00%
B 122668 105829 0 0 0.00% 0.00%
C 122668 105834 0 0 0.00% 0.00%
D 122668 105642 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 0 29 5789 11.07 1551 1448 392.3
A 7 110 4901 8.8 1551 1448 392.3
A 9 19 4491 7.76 1551 1448 392.3
B 2 9 5003 11.68 1532 1457 303.6
B 3 17 3818 7.78 1532 1457 303.6
B 12 226 3779 7.65 1532 1457 303.6
C 1 81 4462 7.18 1596 1480 415.4
C 1 80 4462 7.18 1596 1480 415.4
C 12 241 4262 6.7 1596 1480 415.4
D 6 231 3626 6.2 1412 1282 377.9
D 3 14 3595 6.12 1412 1282 377.9
D 1 19 3459 5.76 1412 1282 377.9

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