ASTROSAT CZTI

Data Quality Report

Orbit 13905

Creation date: 2024-06-27T16:47:42.174971
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/AS1A04_010T02_9000002048_13905cztM0_level2.evt modeM0/AS1A04_010T02_9000002048_13905cztM0_level2_quad_clean.evt
Size (bytes)665,107,20089,432,640
Size634.3 MB 85.3 MB
Events in quadrant A2,907,851621,192
Events in quadrant B2,990,637624,630
Events in quadrant C2,928,556616,391
Events in quadrant D10,905,065421,328

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127052
B0129011
C0125941
D0365871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6063671.105063%
B6063600.989609%
C6063510.841168%
D6063285747.121887%

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 7099 6064 7 7 0.10% 0.12%
B 7099 6064 8 8 0.11% 0.13%
C 7099 6064 0 0 0.00% 0.00%
D 7098 6063 2522 2522 35.53% 41.60%

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 9 143 26502 170.65 736 719 151.1
A 14 111 17696 112.36 736 719 151.1
A 1 162 16635 105.34 736 719 151.1
B 10 244 30824 216.25 729 712 139.2
B 4 173 26675 186.45 729 712 139.2
B 0 219 20282 140.54 729 712 139.2
C 3 233 129844 781.01 717 720 165.3
C 13 61 5061 26.26 717 720 165.3
C 12 4 3621 17.55 717 720 165.3
D 13 122 8107441 59113.89 573 560 137.1
D 5 222 253237 1842.47 573 560 137.1
D 1 52 149327 1084.78 573 560 137.1

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