ASTROSAT CZTI

Data Quality Report

Orbit 11997

Creation date: 2024-06-27T16:21:04.117479
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_024T03_9000001774_11997cztM0_level2.evt modeM0/AS1G08_024T03_9000001774_11997cztM0_level2_quad_clean.evt
Size (bytes)193,662,72032,204,160
Size184.7 MB 30.7 MB
Events in quadrant A1,356,724205,642
Events in quadrant B1,707,651201,802
Events in quadrant C1,224,473202,945
Events in quadrant D1,415,822196,203

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056492
B067671
C051951
D057761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2333692.957565%
B23332139.129876%
C2333391.671667%
D2333582.486069%

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 3569 2334 0 0 0.00% 0.00%
B 3568 2333 116 116 3.25% 4.97%
C 3569 2334 0 0 0.00% 0.00%
D 3569 2334 10 10 0.28% 0.43%

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 1 162 39947 605.38 321 314 65.5
A 1 178 20148 302.96 321 314 65.5
A 1 161 17919 268.91 321 314 65.5
B 4 239 355775 5979.21 309 302 59.5
B 15 204 55185 923.16 309 302 59.5
B 0 85 34027 567.27 309 302 59.5
C 1 16 7922 104.53 311 313 72.8
C 13 61 2245 26.54 311 313 72.8
C 14 234 1033 9.89 311 313 72.8
D 1 52 118015 1574.12 310 301 74.8
D 13 104 32692 433.15 310 301 74.8
D 8 195 30863 408.69 310 301 74.8

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