ASTROSAT CZTI

Data Quality Report

Orbit 16922

Creation date: 2024-06-27T17:29:33.023097
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_030T01_9000002512_16922cztM0_level2.evt modeM0/AS1T03_030T01_9000002512_16922cztM0_level2_quad_clean.evt
Size (bytes)555,753,60085,916,160
Size530.0 MB 81.9 MB
Events in quadrant A5,223,396548,780
Events in quadrant B3,579,581561,505
Events in quadrant C3,302,939529,537
Events in quadrant D4,282,856506,846

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197042
B0144872
C0137012
D0168452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65243735.717351%
B65241722.636419%
C65241342.053955%
D65243285.027590%

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 7635 6526 119 119 1.56% 1.82%
B 7635 6526 18 18 0.24% 0.28%
C 7635 6526 0 0 0.00% 0.00%
D 7635 6526 134 134 1.76% 2.05%

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 15 174 1951436 11417.54 851 835 170.8
A 0 226 7426 38.58 851 835 170.8
A 12 194 6176 31.26 851 835 170.8
B 3 64 169620 1041.8 850 829 162.0
B 15 35 45885 278.09 850 829 162.0
B 0 197 25320 151.16 850 829 162.0
C 14 238 124436 663.93 805 811 186.2
C 3 233 36173 189.91 805 811 186.2
C 13 61 5664 26.06 805 811 186.2
D 1 52 1069027 5421.59 811 788 197.0
D 12 235 73387 368.46 811 788 197.0
D 2 152 55642 278.4 811 788 197.0

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