ASTROSAT CZTI

Data Quality Report

Orbit 37830

Creation date: 2024-06-27T21:45:02.807554
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/AS1C07_001T12_9000005352_37830cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37830cztM0_level2_quad_clean.evt
Size (bytes)424,054,08086,728,320
Size404.4 MB 82.7 MB
Events in quadrant A2,988,439562,733
Events in quadrant B3,390,934564,618
Events in quadrant C2,959,448552,200
Events in quadrant D3,102,917534,897

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126563
B0140012
C0125002
D0133712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5895190.322307%
B58951121.899915%
C5895460.780322%
D5895681.153520%

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 7208 5896 13 13 0.18% 0.22%
B 7207 5894 70 70 0.97% 1.19%
C 7207 5894 40 40 0.56% 0.68%
D 7207 5894 62 62 0.86% 1.05%

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 371888 2793.41 656 644 132.9
A 7 3 26796 196.78 656 644 132.9
A 13 6 19296 140.35 656 644 132.9
B 5 172 305617 2464.13 649 632 123.8
B 0 189 216400 1743.3 649 632 123.8
B 0 229 86434 693.24 649 632 123.8
C 15 214 248183 1671.45 636 639 148.1
C 0 10 145858 980.54 636 639 148.1
C 1 23 41732 277.46 636 639 148.1
D 2 249 101519 645.05 639 622 156.4
D 7 223 94849 602.41 639 622 156.4
D 10 199 75941 481.53 639 622 156.4

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