ASTROSAT CZTI

Data Quality Report

Orbit 20654

Creation date: 2024-06-27T18:17:53.719672
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_082T09_9000003054_20654cztM0_level2.evt modeM0/AS1A05_082T09_9000003054_20654cztM0_level2_quad_clean.evt
Size (bytes)493,683,840106,891,200
Size470.8 MB 101.9 MB
Events in quadrant A3,231,377729,085
Events in quadrant B3,686,993721,366
Events in quadrant C3,470,302680,834
Events in quadrant D4,139,255670,474

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135321
B0150461
C0141872
D0164711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243651.041166%
B62441031.649584%
C62431231.970207%
D62431572.514817%

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 7538 6244 0 0 0.00% 0.00%
B 7539 6245 18 18 0.24% 0.29%
C 7538 6244 16 16 0.21% 0.26%
D 7538 6244 69 69 0.92% 1.11%

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 0 226 7577 40.24 840 825 167.8
A 12 194 6208 32.08 840 825 167.8
A 3 137 5933 30.44 840 825 167.8
B 7 220 144790 928.42 826 809 155.1
B 0 228 90179 576.27 826 809 155.1
B 0 190 79018 504.3 826 809 155.1
C 0 207 136850 742.86 790 798 183.1
C 14 238 124657 676.29 790 798 183.1
C 9 54 47056 252.58 790 798 183.1
D 1 52 326096 1652.83 811 789 196.8
D 1 239 268084 1358.08 811 789 196.8
D 7 238 148479 750.39 811 789 196.8

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