ASTROSAT CZTI

Data Quality Report

Orbit 37746

Creation date: 2024-06-27T21:43:53.382951
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_106T02_9000005344_37746cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37746cztM0_level2_quad_clean.evt
Size (bytes)1,231,125,120203,489,280
Size1.1 GB 194.1 MB
Events in quadrant A7,880,8701,281,273
Events in quadrant B8,455,9121,282,064
Events in quadrant C7,706,4191,301,573
Events in quadrant D12,160,7141,194,609

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337265
B0364224
C0332424
D0474834

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16003190.118728%
B160034202.624508%
C16003510.318690%
D1600313178.229707%

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 21493 16007 11 11 0.05% 0.07%
B 21493 16007 320 320 1.49% 2.00%
C 21493 16007 31 31 0.14% 0.19%
D 21493 16005 1206 1206 5.61% 7.54%

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 862872 2438.27 1769 1737 353.2
A 15 222 41043 111.29 1769 1737 353.2
A 13 6 39793 107.75 1769 1737 353.2
B 5 255 917293 2776.93 1737 1689 329.7
B 5 172 167890 504.07 1737 1689 329.7
B 10 246 117479 351.18 1737 1689 329.7
C 15 214 679731 1702.33 1724 1736 398.3
C 0 10 190257 473.34 1724 1736 398.3
C 15 159 30210 71.49 1724 1736 398.3
D 2 249 2060217 5150.04 1649 1602 399.7
D 12 235 1655185 4136.77 1649 1602 399.7
D 2 250 635988 1587.04 1649 1602 399.7

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