ASTROSAT CZTI

Data Quality Report

Orbit 15024

Creation date: 2024-06-27T17:02:41.181536
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/AS1T02_057T01_9000002212_15024cztM0_level2.evt modeM0/AS1T02_057T01_9000002212_15024cztM0_level2_quad_clean.evt
Size (bytes)492,998,400106,375,680
Size470.2 MB 101.4 MB
Events in quadrant A3,589,003704,160
Events in quadrant B3,687,461719,019
Events in quadrant C3,141,858694,922
Events in quadrant D4,073,638652,812

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148493
B0149312
C0133802
D0165682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6458520.805203%
B64581892.926603%
C645870.108393%
D64581852.864664%

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 7779 6460 1 1 0.01% 0.02%
B 7779 6460 105 105 1.35% 1.63%
C 7779 6460 0 0 0.00% 0.00%
D 7779 6460 240 240 3.09% 3.72%

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 1 162 191917 1195.23 800 786 159.9
A 1 178 105520 654.95 800 786 159.9
A 1 161 89426 554.31 800 786 159.9
B 3 64 435628 2978.92 794 779 146.0
B 0 229 66128 447.67 794 779 146.0
B 3 209 39241 263.48 794 779 146.0
C 3 233 148957 844.35 767 771 175.5
C 13 61 5632 27.7 767 771 175.5
C 3 232 2121 7.69 767 771 175.5
D 7 223 750875 4168.09 758 737 180.0
D 2 136 234076 1296.53 758 737 180.0
D 10 70 140508 776.63 758 737 180.0

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