ASTROSAT CZTI

Data Quality Report

Orbit 19650

Creation date: 2024-06-27T18:05:12.822291
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/AS1A06_003T02_9000002926_19650cztM0_level2.evt modeM0/AS1A06_003T02_9000002926_19650cztM0_level2_quad_clean.evt
Size (bytes)1,519,338,240222,713,280
Size1.4 GB 212.4 MB
Events in quadrant A8,230,4781,486,395
Events in quadrant B9,000,0901,493,539
Events in quadrant C8,379,6261,439,102
Events in quadrant D19,174,2771,070,795

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371303
B0389903
C0371523
D0696613

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181831530.841445%
B181842631.446326%
C181842371.303344%
D18184397521.859877%

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 20008 18185 2 2 0.01% 0.01%
B 20009 18186 57 57 0.28% 0.31%
C 20009 18185 0 0 0.00% 0.00%
D 20009 18186 3654 3654 18.26% 20.09%

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 5 16 34223 74.79 2127 2082 429.7
A 13 254 18721 38.72 2127 2082 429.7
A 0 226 18586 38.4 2127 2082 429.7
B 3 112 269655 662.44 2114 2058 404.0
B 7 220 221987 544.44 2114 2058 404.0
B 4 216 79414 191.5 2114 2058 404.0
C 14 238 315407 655.0 2047 2056 478.4
C 3 233 59115 119.27 2047 2056 478.4
C 9 221 21633 40.92 2047 2056 478.4
D 1 20 8220583 19112.78 1772 1720 430.0
D 1 52 2538836 5900.01 1772 1720 430.0
D 12 218 1374701 3192.84 1772 1720 430.0

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