ASTROSAT CZTI

Data Quality Report

Orbit 06986

Creation date: 2024-06-27T15:14:06.835867
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/AS1T01_151T01_9000000960_06986cztM0_level2.evt modeM0/AS1T01_151T01_9000000960_06986cztM0_level2_quad_clean.evt
Size (bytes)804,709,440132,975,360
Size767.4 MB 126.8 MB
Events in quadrant A6,155,565789,583
Events in quadrant B5,848,174812,289
Events in quadrant C5,625,740796,963
Events in quadrant D5,908,889778,904

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268184
B0256273
C0253873
D0257153

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A122823042.475167%
B12282720.586224%
C12282420.341964%
D12282400.325680%

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 14152 12284 201 201 1.42% 1.64%
B 14152 12284 5 5 0.04% 0.04%
C 14152 12284 0 0 0.00% 0.00%
D 14152 12284 15 15 0.11% 0.12%

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 14 239 660665 2297.12 1409 1376 287.0
A 13 14 31928 106.45 1409 1376 287.0
A 15 174 24944 82.12 1409 1376 287.0
B 0 214 87502 312.99 1438 1399 275.1
B 4 173 78506 280.29 1438 1399 275.1
B 0 219 67430 240.03 1438 1399 275.1
C 10 22 192782 595.96 1389 1394 321.1
C 13 61 10875 29.52 1389 1394 321.1
C 12 4 7353 18.56 1389 1394 321.1
D 8 195 431161 1260.94 1392 1346 340.9
D 2 136 136859 397.55 1392 1346 340.9
D 13 169 52047 148.74 1392 1346 340.9

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