ASTROSAT CZTI

Data Quality Report

Orbit 47875

Creation date: 2024-08-05T01:44:33.948838
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/AS1A13_053T01_9000006370_47875cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47875cztM0_level2_quad_clean.evt
Size (bytes)1,429,156,800306,224,640
Size1.3 GB 292.0 MB
Events in quadrant A19,542,8741,996,056
Events in quadrant B9,299,5872,068,930
Events in quadrant C9,058,0252,027,630
Events in quadrant D13,486,8251,826,634

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0719013
B0419103
C0419283
D0537833

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196247503.821851%
B196254272.175796%
C196252971.513376%
D196247994.071545%

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 20824 19627 25 25 0.12% 0.13%
B 20825 19628 61 61 0.29% 0.31%
C 20825 19628 153 153 0.73% 0.78%
D 20824 19627 546 546 2.62% 2.78%

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 10 83 11028073 24647.74 2167 2116 447.3
A 13 248 74866 162.63 2167 2116 447.3
A 7 3 32766 68.51 2167 2116 447.3
B 5 255 211139 494.87 2166 2094 422.4
B 7 221 126581 294.7 2166 2094 422.4
B 5 32 84173 194.31 2166 2094 422.4
C 12 2 638779 1263.5 2142 2145 503.9
C 14 254 28993 53.28 2142 2145 503.9
C 0 207 16976 29.43 2142 2145 503.9
D 2 165 2791657 5230.04 2127 2060 533.4
D 12 2 643273 1202.17 2127 2060 533.4
D 2 249 626001 1169.79 2127 2060 533.4

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