ASTROSAT CZTI

Data Quality Report

Orbit 35846

Creation date: 2022-06-08T17:46:00.737496
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/AS1A11_080T01_9000005146_35846cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35846cztM0_level2_quad_clean.evt
Size (bytes)429,220,800101,301,120
Size409.3 MB 96.6 MB
Events in quadrant A2,864,727678,585
Events in quadrant B3,356,037677,157
Events in quadrant C3,220,770664,934
Events in quadrant D3,162,611641,342

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120483
B0136282
C0128282
D0131592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5802100.172354%
B58021202.068252%
C58021252.154430%
D5802611.051362%

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 7115 5803 0 0 0.00% 0.00%
B 7115 5803 27 27 0.38% 0.47%
C 7115 5803 100 100 1.41% 1.72%
D 7115 5803 52 52 0.73% 0.90%

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 163919 1137.51 696 685 143.5
A 13 254 8659 55.57 696 685 143.5
A 13 6 8203 52.39 696 685 143.5
B 5 172 301446 2264.53 687 671 132.8
B 4 232 216682 1626.34 687 671 132.8
B 0 214 52240 388.26 687 671 132.8
C 0 10 273727 1743.78 670 678 156.6
C 15 214 240463 1531.35 670 678 156.6
C 0 207 70330 444.82 670 678 156.6
D 7 223 128901 765.29 675 658 167.6
D 13 249 123884 735.35 675 658 167.6
D 10 118 85383 505.6 675 658 167.6

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