ASTROSAT CZTI

Data Quality Report

Orbit 44939

Creation date: 2024-06-27T23:08:12.115152
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/AS1A13_017T02_9000006032_44939cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44939cztM0_level2_quad_clean.evt
Size (bytes)696,081,600107,040,960
Size663.8 MB 102.1 MB
Events in quadrant A5,931,956788,343
Events in quadrant B4,180,415822,794
Events in quadrant C3,372,763802,696
Events in quadrant D11,763,238361,055

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221812
B0167952
C0142532
D0395802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66862844.247682%
B66862343.499850%
C66861051.570446%
D6686350452.408017%

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 7811 6687 3 3 0.04% 0.04%
B 7811 6687 52 52 0.67% 0.78%
C 7811 6687 3 3 0.04% 0.04%
D 7811 6687 3057 3057 39.14% 45.72%

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 10 83 2625173 15211.94 832 815 172.5
A 13 248 34126 193.09 832 815 172.5
A 0 243 30431 171.67 832 815 172.5
B 4 171 283509 1737.47 830 806 162.7
B 5 255 114230 697.1 830 806 162.7
B 0 155 95583 582.49 830 806 162.7
C 3 233 76292 391.55 828 835 192.7
C 14 254 29762 150.11 828 835 192.7
C 15 208 16825 82.97 828 835 192.7
D 13 187 7451557 51416.76 559 542 144.9
D 1 52 609256 4200.51 559 542 144.9
D 5 171 419057 2888.02 559 542 144.9

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