ASTROSAT CZTI

Data Quality Report

Orbit 33224

Creation date: 2024-06-27T20:46:18.572763
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_067T01_9000004774_33224cztM0_level2.evt modeM0/AS1A10_067T01_9000004774_33224cztM0_level2_quad_clean.evt
Size (bytes)543,839,04078,128,640
Size518.6 MB 74.5 MB
Events in quadrant A2,572,019513,196
Events in quadrant B4,315,936498,907
Events in quadrant C2,930,556499,467
Events in quadrant D6,283,542473,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109813
B0163682
C0122482
D0226302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A543720.036785%
B54374538.331801%
C5437881.618540%
D54374628.497333%

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 7109 5438 0 0 0.00% 0.00%
B 7109 5438 255 255 3.59% 4.69%
C 7109 5438 65 65 0.91% 1.20%
D 7109 5438 373 373 5.25% 6.86%

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 6 16818 122.97 656 645 131.5
A 15 47 14238 103.36 656 645 131.5
A 13 254 9549 67.7 656 645 131.5
B 4 170 1198558 9904.29 635 620 121.0
B 5 172 356083 2938.89 635 620 121.0
B 0 219 91271 749.48 635 620 121.0
C 0 10 230936 1575.29 627 633 146.2
C 10 49 131337 894.03 627 633 146.2
C 9 187 32347 216.93 627 633 146.2
D 8 195 2144331 13530.36 615 602 158.4
D 12 3 588955 3713.45 615 602 158.4
D 10 203 361384 2277.11 615 602 158.4

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