ASTROSAT CZTI

Data Quality Report

Orbit 16271

Creation date: 2024-06-27T17:20:10.852729
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/AS1A05_072T05_9000002394_16271cztM0_level2.evt modeM0/AS1A05_072T05_9000002394_16271cztM0_level2_quad_clean.evt
Size (bytes)208,630,08021,484,800
Size199.0 MB 20.5 MB
Events in quadrant A1,196,066128,466
Events in quadrant B2,390,630113,510
Events in quadrant C1,190,768129,786
Events in quadrant D1,396,232125,808

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047512
B085351
C048261
D055821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2099894.240114%
B209959028.108623%
C20991004.764173%
D2099844.001906%

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 3140 2101 5 5 0.16% 0.24%
B 3140 2101 266 266 8.47% 12.66%
C 3140 2101 0 0 0.00% 0.00%
D 3140 2101 13 13 0.41% 0.62%

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 15 174 65448 1074.75 292 285 60.6
A 9 143 6963 110.14 292 285 60.6
A 0 226 2551 37.37 292 285 60.6
B 3 112 1269399 24068.83 262 256 52.7
B 3 64 41402 780.32 262 256 52.7
B 15 35 18995 355.38 262 256 52.7
C 3 233 52863 783.17 280 281 67.1
C 14 238 42575 629.94 280 281 67.1
C 13 61 1973 25.2 280 281 67.1
D 1 52 268328 3741.24 286 277 71.6
D 10 70 31436 434.89 286 277 71.6
D 15 0 7312 98.19 286 277 71.6

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