ASTROSAT CZTI

Data Quality Report

Orbit 41356

Creation date: 2024-06-27T22:28:04.230342
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_105T01_9000005658_41356cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41356cztM0_level2_quad_clean.evt
Size (bytes)383,160,96096,600,960
Size365.4 MB 92.1 MB
Events in quadrant A2,965,921662,514
Events in quadrant B2,552,105682,337
Events in quadrant C3,337,827616,138
Events in quadrant D4,884,865566,350

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123263
B0115672
C0133842
D0183652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5689180.316400%
B5689120.210933%
C56892694.728423%
D56893676.451046%

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 9185 5691 4 4 0.04% 0.07%
B 9185 5690 0 0 0.00% 0.00%
C 9185 5690 257 257 2.80% 4.52%
D 9185 5691 392 392 4.27% 6.89%

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 515361 3939.98 632 619 130.6
A 13 6 7700 54.2 632 619 130.6
A 3 137 7136 49.88 632 619 130.6
B 5 255 31474 251.17 631 613 122.9
B 0 190 19257 151.74 631 613 122.9
B 12 111 15731 123.04 631 613 122.9
C 0 10 756160 5437.9 597 601 138.9
C 15 214 233858 1678.8 597 601 138.9
C 14 67 11086 75.46 597 601 138.9
D 5 222 800265 5439.42 599 583 147.0
D 1 47 756086 5138.91 599 583 147.0
D 13 249 267096 1812.82 599 583 147.0

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