ASTROSAT CZTI

Data Quality Report

Orbit 24829

Creation date: 2024-06-27T19:10:21.459747
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/AS1A08_003T02_9000003630_24829cztM0_level2.evt modeM0/AS1A08_003T02_9000003630_24829cztM0_level2_quad_clean.evt
Size (bytes)379,275,84054,521,280
Size361.7 MB 52.0 MB
Events in quadrant A2,338,524339,841
Events in quadrant B2,388,919344,767
Events in quadrant C2,358,406323,656
Events in quadrant D4,079,503311,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099111
B099841
C099251
D0153921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47111443.056676%
B47111703.608576%
C47111693.587349%
D471153211.292719%

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 4901 4713 0 0 0.00% 0.00%
B 4901 4713 4 4 0.08% 0.08%
C 4901 4713 0 0 0.00% 0.00%
D 4901 4713 276 276 5.63% 5.86%

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 13 254 6354 46.47 606 593 124.0
A 3 137 6000 43.62 606 593 124.0
A 0 226 5178 36.98 606 593 124.0
B 4 80 18686 150.7 600 584 120.1
B 12 111 15170 121.43 600 584 120.1
B 11 111 13627 108.58 600 584 120.1
C 14 238 92004 664.78 577 579 137.5
C 2 16 11827 81.79 577 579 137.5
C 7 247 7768 52.27 577 579 137.5
D 5 222 1252999 9006.59 565 546 139.1
D 8 195 577618 4149.82 565 546 139.1
D 1 52 91429 653.55 565 546 139.1

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