ASTROSAT CZTI

Data Quality Report

Orbit 37051

Creation date: 2024-06-27T21:34:37.492672
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_046T02_9000005274_37051cztM0_level2.evt modeM0/AS1A11_046T02_9000005274_37051cztM0_level2_quad_clean.evt
Size (bytes)1,468,077,120161,452,800
Size1.4 GB 154.0 MB
Events in quadrant A7,843,157986,335
Events in quadrant B9,624,861988,519
Events in quadrant C9,915,803971,346
Events in quadrant D16,037,474877,840

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331335
B0388514
C0394694
D0586434

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15428250.162043%
B154286173.999222%
C154283372.184340%
D15428262617.021001%

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 20919 15432 3 3 0.01% 0.02%
B 20919 15432 415 415 1.98% 2.69%
C 20919 15432 284 284 1.36% 1.84%
D 20919 15432 2100 2100 10.04% 13.61%

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 623157 1740.73 1780 1742 357.0
A 11 254 267293 743.87 1780 1742 357.0
A 9 143 31078 82.18 1780 1742 357.0
B 5 172 1165480 3509.44 1743 1693 331.6
B 5 184 783585 2357.82 1743 1693 331.6
B 0 229 306869 920.27 1743 1693 331.6
C 14 254 1186884 2985.93 1711 1721 396.9
C 15 214 647791 1627.72 1711 1721 396.9
C 0 207 582847 1464.1 1711 1721 396.9
D 12 17 5148693 13273.82 1596 1555 387.8
D 1 52 1689444 4352.85 1596 1555 387.8
D 13 171 720397 1853.8 1596 1555 387.8

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