ASTROSAT CZTI

Data Quality Report

Orbit 27105

Creation date: 2024-06-27T19:36:32.795900
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/AS1T03_231T01_9000003910_27105cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27105cztM0_level2_quad_clean.evt
Size (bytes)1,569,576,960234,662,400
Size1.5 GB 223.8 MB
Events in quadrant A10,651,9651,499,051
Events in quadrant B11,334,1141,491,553
Events in quadrant C9,111,4261,465,807
Events in quadrant D15,167,2461,352,729

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433840
B0452290
C0388160
D0575940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188395462.898243%
B188407513.986200%
C188403551.884289%
D1884013867.356688%

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 20984 18843 189 189 0.90% 1.00%
B 20985 18844 365 365 1.74% 1.94%
C 20985 18844 1 1 0.00% 0.01%
D 20985 18844 1244 1244 5.93% 6.60%

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 14 235 1647113 3532.85 2316 2264 465.6
A 12 189 55448 114.23 2316 2264 465.6
A 13 254 28926 57.27 2316 2264 465.6
B 0 189 1908368 4296.8 2285 2225 443.6
B 3 112 287626 643.35 2285 2225 443.6
B 10 245 87274 191.72 2285 2225 443.6
C 14 238 351159 663.63 2230 2244 525.8
C 15 208 51804 94.26 2230 2244 525.8
C 2 16 24651 42.62 2230 2244 525.8
D 1 52 4162833 7183.03 2183 2136 579.2
D 7 38 1687929 2910.35 2183 2136 579.2
D 2 250 452014 776.67 2183 2136 579.2

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