ASTROSAT CZTI

Data Quality Report

Orbit 17425

Creation date: 2024-06-27T17:36:22.023420
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/AS1A05_198T01_9000002578_17425cztM0_level2.evt modeM0/AS1A05_198T01_9000002578_17425cztM0_level2_quad_clean.evt
Size (bytes)499,740,48098,916,480
Size476.6 MB 94.3 MB
Events in quadrant A3,344,824657,304
Events in quadrant B3,788,507664,582
Events in quadrant C3,337,888625,373
Events in quadrant D4,235,921608,589

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140852
B0153892
C0140162
D0168732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6303971.538950%
B63031071.697604%
C63031201.903855%
D63032003.173092%

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 7523 6303 5 5 0.07% 0.08%
B 7523 6303 5 5 0.07% 0.08%
C 7523 6303 0 0 0.00% 0.00%
D 7523 6303 121 121 1.61% 1.92%

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 13 210 22266 125.27 857 841 171.0
A 15 174 18194 101.46 857 841 171.0
A 0 226 7614 39.6 857 841 171.0
B 7 220 115416 722.86 847 829 158.5
B 0 219 103682 648.84 847 829 158.5
B 4 48 84833 529.93 847 829 158.5
C 14 238 127095 685.26 798 805 184.3
C 5 218 64240 344.2 798 805 184.3
C 3 233 17844 92.46 798 805 184.3
D 13 232 565979 2854.76 817 795 198.0
D 11 176 195608 984.01 817 795 198.0
D 2 33 120802 606.16 817 795 198.0

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