ASTROSAT CZTI

Data Quality Report

Orbit 20160616_G05_239T02_9000000496_level2

Creation date: 2025-10-30T22:11:15.018342
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/AS1G05_239T02_9000000496cztM0_level2.fits modeM0/AS1G05_239T02_9000000496cztM0_level2_quad_clean.evt
Size (bytes)487,005,120461,908,800
Size464.4 MB 440.5 MB
Events in quadrant A2,939,4162,688,878
Events in quadrant B2,884,7662,772,960
Events in quadrant C2,746,7802,440,135
Events in quadrant D2,475,1202,386,676

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01338580
B01206680
C01838090
D01254420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010960
B010960
C010960
D010960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5392921513.988578%
B539296871.273897%
C5392951079.469859%
D5392913172.442100%

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 63728 53913 0 0 0.00% 0.00%
B 63728 53917 0 0 0.00% 0.00%
C 63728 53873 0 0 0.00% 0.00%
D 63728 53907 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 2742 10.21 764 711 199.0
A 7 110 2458 8.78 764 711 199.0
A 0 30 2218 7.57 764 711 199.0
B 2 9 2422 11.07 762 724 153.4
B 12 226 2119 9.1 762 724 153.4
B 5 128 2077 8.82 762 724 153.4
C 1 80 1966 6.64 725 672 194.9
C 9 188 1924 6.42 725 672 194.9
C 1 81 1918 6.39 725 672 194.9
D 6 231 1911 6.62 709 644 191.4
D 7 5 1868 6.39 709 644 191.4
D 3 14 1857 6.34 709 644 191.4

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