ASTROSAT CZTI

Data Quality Report

Orbit 37915

Creation date: 2024-06-27T21:46:06.794198
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/AS1T05_059T01_9000005354_37915cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37915cztM0_level2_quad_clean.evt
Size (bytes)454,302,72070,744,320
Size433.3 MB 67.5 MB
Events in quadrant A2,829,446451,456
Events in quadrant B3,856,995432,038
Events in quadrant C2,712,677455,394
Events in quadrant D3,986,793418,854

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117433
B0150592
C0115092
D0156452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5487120.218699%
B54873506.378713%
C5487260.473847%
D54872915.303445%

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 7160 5488 6 6 0.08% 0.11%
B 7160 5488 258 258 3.60% 4.70%
C 7160 5488 17 17 0.24% 0.31%
D 7160 5488 284 284 3.97% 5.17%

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 10 83 377637 3009.67 615 605 125.3
A 12 189 27569 215.24 615 605 125.3
A 13 6 18197 140.43 615 605 125.3
B 5 172 1056391 9137.49 598 583 115.5
B 0 229 163091 1406.42 598 583 115.5
B 0 230 102182 879.29 598 583 115.5
C 15 214 231420 1663.65 592 596 138.7
C 0 10 122721 880.21 592 596 138.7
C 15 159 20320 142.16 592 596 138.7
D 1 52 702865 4819.91 584 567 145.7
D 13 171 344013 2357.09 584 567 145.7
D 2 249 160656 1098.7 584 567 145.7

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