ASTROSAT CZTI

Data Quality Report

Orbit 42480

Creation date: 2024-06-27T22:40:42.164428
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/AS1C07_001T10_9000005806_42480cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42480cztM0_level2_quad_clean.evt
Size (bytes)399,988,80092,589,120
Size381.5 MB 88.3 MB
Events in quadrant A3,268,635636,712
Events in quadrant B2,659,318637,827
Events in quadrant C2,728,991621,726
Events in quadrant D5,686,549491,860

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133822
B0123582
C0120782
D0213142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5941140.235651%
B5941100.168322%
C594190.151490%
D5941106017.842114%

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 7254 5942 6 6 0.08% 0.10%
B 7254 5942 3 3 0.04% 0.05%
C 7254 5942 2 2 0.03% 0.03%
D 7254 5942 975 975 13.44% 16.41%

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 619701 4844.22 623 610 127.8
A 12 189 193698 1510.86 623 610 127.8
A 13 6 15103 113.4 623 610 127.8
B 0 245 63185 525.86 616 597 119.0
B 0 186 51306 426.05 616 597 119.0
B 5 172 51180 424.99 616 597 119.0
C 15 214 244954 1720.87 608 612 142.0
C 14 254 50590 351.99 608 612 142.0
C 0 239 18674 127.21 608 612 142.0
D 2 16 2491631 17500.97 579 561 142.3
D 12 0 211538 1482.22 579 561 142.3
D 4 239 192949 1351.62 579 561 142.3

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