ASTROSAT CZTI

Data Quality Report

Orbit 28767

Creation date: 2024-06-27T19:56:03.230553
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/AS1A10_093T01_9000004128_28767cztM0_level2.evt modeM0/AS1A10_093T01_9000004128_28767cztM0_level2_quad_clean.evt
Size (bytes)242,213,76055,863,360
Size231.0 MB 53.3 MB
Events in quadrant A1,369,418384,495
Events in quadrant B1,530,698388,899
Events in quadrant C2,030,985357,093
Events in quadrant D2,200,395348,640

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060260
B064730
C080580
D085610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A297860.201478%
B2979331.107754%
C2979341.141323%
D2979672.249077%

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 2978 2978 0 0 0.00% 0.00%
B 2979 2979 16 16 0.54% 0.54%
C 2979 2979 0 0 0.00% 0.00%
D 2979 2979 77 77 2.58% 2.58%

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 13 254 5448 70.2 352 344 72.7
A 14 239 4489 57.01 352 344 72.7
A 15 174 3629 45.18 352 344 72.7
B 4 80 160354 2352.97 346 337 68.0
B 12 111 7898 111.18 346 337 68.0
B 11 111 7252 101.68 346 337 68.0
C 3 233 672049 8517.1 331 333 78.9
C 14 238 54111 681.88 331 333 78.9
C 8 128 4630 54.48 331 333 78.9
D 8 195 390212 4755.77 336 326 82.0
D 1 52 238966 2910.89 336 326 82.0
D 12 233 135389 1647.48 336 326 82.0

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