ASTROSAT CZTI

Data Quality Report

Orbit 25661

Creation date: 2024-06-27T19:20:02.691448
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/AS1A09_006T04_9000003738_25661cztM0_level2.evt modeM0/AS1A09_006T04_9000003738_25661cztM0_level2_quad_clean.evt
Size (bytes)329,163,84058,608,000
Size313.9 MB 55.9 MB
Events in quadrant A2,469,657372,342
Events in quadrant B2,343,026383,665
Events in quadrant C2,302,474353,488
Events in quadrant D2,540,988342,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100090
B097480
C096480
D0105100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4586120.261666%
B4585110.239913%
C4585390.850600%
D4585140.305344%

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 5801 4587 0 0 0.00% 0.00%
B 5800 4586 0 0 0.00% 0.00%
C 5800 4586 0 0 0.00% 0.00%
D 5800 4586 11 11 0.19% 0.24%

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 8 192 179884 1507.12 592 582 119.0
A 6 16 8370 65.46 592 582 119.0
A 13 254 6643 50.95 592 582 119.0
B 0 245 13932 118.82 590 577 112.4
B 12 111 13788 117.53 590 577 112.4
B 11 111 12323 104.5 590 577 112.4
C 14 238 92685 706.28 559 564 130.4
C 3 233 26067 195.53 559 564 130.4
C 2 16 5404 37.11 559 564 130.4
D 1 52 230363 1676.59 563 548 137.1
D 8 195 152072 1105.42 563 548 137.1
D 13 104 18465 130.71 563 548 137.1

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