ASTROSAT CZTI

Data Quality Report

Orbit 40087

Creation date: 2024-06-27T22:12:11.636539
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_086T01_9000005518_40087cztM0_level2.fits modeM0/AS1T05_086T01_9000005518_40087cztM0_level2_quad_clean.evt
Size (bytes)458,182,080101,787,840
Size437.0 MB 97.1 MB
Events in quadrant A3,103,056713,152
Events in quadrant B3,260,008729,049
Events in quadrant C6,486,208620,456
Events in quadrant D3,664,319617,563

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124703
B0134032
C0232512
D0147432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5752280.486787%
B5752570.990960%
C575286515.038248%
D57521763.059805%

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 9606 5754 21 21 0.22% 0.36%
B 9606 5754 56 56 0.58% 0.97%
C 9606 5754 810 810 8.43% 14.08%
D 9606 5754 151 151 1.57% 2.62%

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 483644 3594.55 651 640 134.4
A 6 10 55894 411.2 651 640 134.4
A 2 79 18870 135.67 651 640 134.4
B 0 189 510372 4059.35 647 632 125.6
B 15 201 143160 1135.03 647 632 125.6
B 5 63 21803 168.6 647 632 125.6
C 9 187 3121370 21978.02 601 607 142.0
C 15 208 583710 4106.51 601 607 142.0
C 15 214 230427 1618.51 601 607 142.0
D 12 0 391526 2520.22 624 608 155.1
D 12 227 369597 2378.85 624 608 155.1
D 9 19 142856 917.06 624 608 155.1

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