ASTROSAT CZTI

Data Quality Report

Orbit 42126

Creation date: 2024-06-27T22:37:15.486900
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/AS1A12_061T07_9000005752_42126cztM0_level2.fits modeM0/AS1A12_061T07_9000005752_42126cztM0_level2_quad_clean.evt
Size (bytes)294,091,20090,835,200
Size280.5 MB 86.6 MB
Events in quadrant A2,770,258619,222
Events in quadrant B2,336,529644,091
Events in quadrant C2,445,457598,203
Events in quadrant D2,949,775543,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111192
B099793
C099652
D0120732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4929150.304321%
B492870.142045%
C492830.060877%
D4928841.704545%

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 6991 4930 3 3 0.04% 0.06%
B 6990 4929 1 1 0.01% 0.02%
C 6990 4929 0 0 0.00% 0.00%
D 6990 4929 85 85 1.22% 1.72%

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 484568 4079.11 585 573 118.7
A 13 6 18134 148.0 585 573 118.7
A 13 248 9017 71.17 585 573 118.7
B 5 255 18855 166.0 584 570 110.2
B 0 229 14201 123.75 584 570 110.2
B 12 111 13592 118.22 584 570 110.2
C 15 214 206805 1551.48 573 578 132.9
C 8 79 6321 43.21 573 578 132.9
C 13 61 3785 24.13 573 578 132.9
D 1 52 437716 3198.39 564 549 136.7
D 13 249 165938 1210.02 564 549 136.7
D 12 6 106570 775.67 564 549 136.7

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