ASTROSAT CZTI

Data Quality Report

Orbit 39696

Creation date: 2024-06-27T22:07:52.472687
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/AS1A12_011T22_9000005492_39696cztM0_level2.fits modeM0/AS1A12_011T22_9000005492_39696cztM0_level2_quad_clean.evt
Size (bytes)259,580,16043,908,480
Size247.6 MB 41.9 MB
Events in quadrant A4,320,041245,296
Events in quadrant B1,517,007312,656
Events in quadrant C2,030,586302,107
Events in quadrant D1,528,857275,368

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147132
B063071
C077341
D064531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A271380829.782529%
B2713923.391080%
C2713672.469591%
D2713823.022484%

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 4504 2714 684 684 15.19% 25.20%
B 4504 2714 67 67 1.49% 2.47%
C 4504 2714 72 72 1.60% 2.65%
D 4504 2714 68 68 1.51% 2.51%

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 15 222 2848132 47497.52 286 279 60.0
A 10 83 192934 3213.17 286 279 60.0
A 15 174 161564 2689.97 286 279 60.0
B 5 172 310535 5145.93 302 293 60.3
B 10 246 15206 247.36 302 293 60.3
B 12 111 7448 118.68 302 293 60.3
C 15 208 507580 7246.95 295 297 70.0
C 9 187 230764 3292.41 295 297 70.0
C 15 214 111116 1583.14 295 297 70.0
D 2 153 172441 2380.06 294 286 72.3
D 12 233 165281 2281.07 294 286 72.3
D 2 250 24849 339.59 294 286 72.3

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