ASTROSAT CZTI

Data Quality Report

Orbit 03641

Creation date: 2024-06-27T14:31:50.846119
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/AS1G05_234T02_9000000474_03641cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03641cztM0_level2_quad_clean.evt
Size (bytes)1,123,853,760161,876,160
Size1.0 GB 154.4 MB
Events in quadrant A7,156,443970,851
Events in quadrant B8,008,428971,825
Events in quadrant C10,682,784950,603
Events in quadrant D7,140,095939,057

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324636
B0346075
C0428343
D0331085

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15507950.612627%
B155071050.677114%
C1550810716.906113%
D155081210.780242%

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 16558 15511 37 37 0.22% 0.24%
B 16558 15511 7 7 0.04% 0.05%
C 16558 15511 737 737 4.45% 4.75%
D 16559 15512 78 78 0.47% 0.50%

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 13 251 277348 786.1 1713 1670 350.7
A 13 164 149098 420.39 1713 1670 350.7
A 0 50 35205 95.62 1713 1670 350.7
B 15 204 672281 2003.59 1740 1694 334.7
B 14 167 171553 507.51 1740 1694 334.7
B 4 81 123023 362.51 1740 1694 334.7
C 2 53 3901104 10211.9 1644 1649 381.9
C 9 247 301132 784.29 1644 1649 381.9
C 1 16 22106 53.57 1644 1649 381.9
D 13 223 274767 679.78 1664 1613 401.8
D 12 110 112156 275.1 1664 1613 401.8
D 13 239 111182 272.68 1664 1613 401.8

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
Veto Counter