ASTROSAT CZTI

Data Quality Report

Orbit 28118

Creation date: 2024-06-27T19:48:16.562437
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/AS1A10_090T14_9000004064_28118cztM0_level2.evt modeM0/AS1A10_090T14_9000004064_28118cztM0_level2_quad_clean.evt
Size (bytes)237,600,00035,772,480
Size226.6 MB 34.1 MB
Events in quadrant A1,558,594217,663
Events in quadrant B1,667,856217,450
Events in quadrant C1,562,310211,034
Events in quadrant D2,180,845202,033

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067380
B071020
C067680
D087170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A330370.211929%
B3303391.180745%
C3303290.877990%
D33031193.602785%

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 4023 3304 0 0 0.00% 0.00%
B 4023 3304 30 30 0.75% 0.91%
C 4023 3304 1 1 0.02% 0.03%
D 4023 3304 80 80 1.99% 2.42%

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 13 254 5337 59.48 402 394 83.1
A 3 137 3965 42.97 402 394 83.1
A 0 226 3390 36.05 402 394 83.1
B 10 245 83018 1061.79 393 382 77.8
B 10 246 13447 167.87 393 382 77.8
B 12 111 9592 118.34 393 382 77.8
C 14 238 61552 675.53 380 381 90.6
C 3 233 18856 204.02 380 381 90.6
C 13 61 2604 24.55 380 381 90.6
D 1 52 329845 3581.48 381 369 92.0
D 7 223 206815 2244.12 381 369 92.0
D 8 195 94010 1017.9 381 369 92.0

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