ASTROSAT CZTI

Data Quality Report

Orbit 22141

Creation date: 2024-06-27T18:37:21.238085
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_145T01_9000003278_22141cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22141cztM0_level2_quad_clean.evt
Size (bytes)555,952,32087,004,800
Size530.2 MB 83.0 MB
Events in quadrant A3,076,357562,688
Events in quadrant B3,211,054573,997
Events in quadrant C3,234,762546,936
Events in quadrant D6,867,364490,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134192
B0136012
C0137552
D0249072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6597270.409277%
B6597450.682128%
C6597951.440049%
D6597126919.236016%

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 7567 6597 0 0 0.00% 0.00%
B 7567 6597 5 5 0.07% 0.08%
C 7567 6597 18 18 0.24% 0.27%
D 7567 6597 1261 1261 16.66% 19.11%

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 11082 64.28 796 781 160.2
A 0 226 6885 38.09 796 781 160.2
A 3 137 6858 37.92 796 781 160.2
B 3 64 37815 243.0 798 779 152.4
B 12 111 18780 118.11 798 779 152.4
B 10 246 17473 109.53 798 779 152.4
C 14 238 121042 673.99 770 775 178.4
C 10 22 108651 604.55 770 775 178.4
C 13 61 5338 25.57 770 775 178.4
D 1 52 3213214 18331.59 720 698 175.2
D 11 176 662998 3779.28 720 698 175.2
D 7 223 156287 887.84 720 698 175.2

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