ASTROSAT CZTI

Data Quality Report

Orbit 06696

Creation date: 2024-06-27T15:10:29.521919
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_145T01_9000000916_06696cztM0_level2.evt modeM0/AS1T01_145T01_9000000916_06696cztM0_level2_quad_clean.evt
Size (bytes)920,105,280219,646,080
Size877.5 MB 209.5 MB
Events in quadrant A5,902,6111,465,932
Events in quadrant B6,016,8971,490,788
Events in quadrant C5,489,9391,478,525
Events in quadrant D9,592,3751,335,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265293
B0263042
C0258152
D0372482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127501801.411765%
B127501411.105882%
C127501060.831373%
D12750132310.376471%

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 13785 12752 37 37 0.27% 0.29%
B 13785 12752 1 1 0.01% 0.01%
C 13785 12752 0 0 0.00% 0.00%
D 13785 12752 974 974 7.07% 7.64%

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 14 111 169757 578.33 1432 1396 291.1
A 8 15 152341 518.5 1432 1396 291.1
A 13 251 24705 80.07 1432 1396 291.1
B 0 214 150385 540.53 1447 1411 275.6
B 15 204 70604 251.06 1447 1411 275.6
B 0 228 39964 139.88 1447 1411 275.6
C 9 54 15988 45.35 1396 1398 321.7
C 13 61 11226 30.55 1396 1398 321.7
C 8 128 9776 26.04 1396 1398 321.7
D 2 33 3543751 10835.98 1336 1294 326.9
D 2 152 470489 1435.22 1336 1294 326.9
D 8 195 194932 592.32 1336 1294 326.9

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