ASTROSAT CZTI

Data Quality Report

Orbit 20640

Creation date: 2024-06-27T18:17:46.351171
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/AS1A05_007T06_9000003050_20640cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20640cztM0_level2_quad_clean.evt
Size (bytes)504,005,760115,453,440
Size480.7 MB 110.1 MB
Events in quadrant A3,173,809799,861
Events in quadrant B3,400,410787,410
Events in quadrant C3,286,211763,515
Events in quadrant D5,008,228738,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132862
B0139671
C0133541
D0189171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58321151.971879%
B58321302.229081%
C58321151.971879%
D58323836.567215%

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 7132 5833 9 9 0.13% 0.15%
B 7132 5833 22 22 0.31% 0.38%
C 7132 5832 4 4 0.06% 0.07%
D 7132 5832 303 303 4.25% 5.20%

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 5 16 132645 861.48 777 763 153.1
A 12 16 45440 291.84 777 763 153.1
A 12 194 14007 86.51 777 763 153.1
B 7 220 254562 1824.3 760 743 139.1
B 0 197 31307 219.68 760 743 139.1
B 0 190 28153 197.01 760 743 139.1
C 8 208 185752 1086.32 745 753 170.3
C 14 238 116424 679.23 745 753 170.3
C 7 247 73351 426.3 745 753 170.3
D 12 227 933376 5260.48 743 726 177.3
D 1 52 917833 5172.81 743 726 177.3
D 1 20 135897 762.41 743 726 177.3

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