ASTROSAT CZTI

Data Quality Report

Orbit 40450

Creation date: 2024-06-27T22:16:15.625002
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_022T01_9000005540_40450cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40450cztM0_level2_quad_clean.evt
Size (bytes)415,828,80087,920,640
Size396.6 MB 83.8 MB
Events in quadrant A2,904,158629,266
Events in quadrant B2,601,106643,430
Events in quadrant C2,733,129618,442
Events in quadrant D6,710,635373,310

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122713
B0116092
C0118532
D0238352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5683120.211156%
B568340.070385%
C5683230.404716%
D5683223439.310223%

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 7176 5684 5 5 0.07% 0.09%
B 7176 5684 1 1 0.01% 0.02%
C 7176 5684 14 14 0.20% 0.25%
D 7176 5684 1264 1264 17.61% 22.24%

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 505223 4069.61 606 594 124.0
A 2 79 33788 267.69 606 594 124.0
A 3 1 7844 58.47 606 594 124.0
B 3 112 183545 1549.39 605 588 118.1
B 4 171 26636 220.59 605 588 118.1
B 12 111 14766 120.07 605 588 118.1
C 15 214 246835 1768.47 597 600 139.2
C 14 254 133707 955.98 597 600 139.2
C 0 10 13249 90.85 597 600 139.2
D 2 250 2509256 21259.75 475 460 118.0
D 12 227 2150849 18222.58 475 460 118.0
D 12 191 153499 1296.87 475 460 118.0

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