ASTROSAT CZTI

Data Quality Report

Orbit 20620

Creation date: 2024-06-27T18:17:30.943894
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/AS1A06_005T02_9000003048_20620cztM0_level2.evt modeM0/AS1A06_005T02_9000003048_20620cztM0_level2_quad_clean.evt
Size (bytes)2,268,046,080367,104,960
Size2.1 GB 350.1 MB
Events in quadrant A14,580,8452,346,065
Events in quadrant B15,290,7832,340,566
Events in quadrant C15,416,0062,258,688
Events in quadrant D21,420,7862,155,335

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0624975
B0641085
C0643505
D0833715

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05960
B05960
C05960
D05960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A293631820.619828%
B293634271.454211%
C293633421.164731%
D2936318126.171032%

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 32253 29368 39 39 0.12% 0.13%
B 32253 29368 174 174 0.54% 0.59%
C 32253 29368 21 21 0.07% 0.07%
D 32253 29368 1535 1535 4.76% 5.23%

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 12 16 624199 879.24 3514 3437 706.0
A 5 16 302196 423.16 3514 3437 706.0
A 12 194 126565 174.4 3514 3437 706.0
B 7 220 625139 943.23 3488 3403 659.2
B 3 64 378714 569.38 3488 3403 659.2
B 0 197 120976 178.37 3488 3403 659.2
C 3 9 710976 907.22 3351 3377 780.0
C 8 208 558861 712.19 3351 3377 780.0
C 14 238 523685 667.09 3351 3377 780.0
D 1 52 4299301 5352.06 3314 3216 802.7
D 5 222 2197796 2734.0 3314 3216 802.7
D 2 165 838259 1040.3 3314 3216 802.7

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