ASTROSAT CZTI

Data Quality Report

Orbit 34570

Creation date: 2022-02-18T22:30:51.029495
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_167T01_9000004940_34570cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34570cztM0_level2_quad_clean.evt
Size (bytes)509,647,68059,520,960
Size486.0 MB 56.8 MB
Events in quadrant A2,628,081361,504
Events in quadrant B4,104,177354,718
Events in quadrant C2,927,242363,919
Events in quadrant D5,405,712340,103

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112513
B0156802
C0116982
D0199302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544980.146816%
B54494538.313452%
C5449530.972656%
D54493446.313085%

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 7242 5450 0 0 0.00% 0.00%
B 7242 5450 303 303 4.18% 5.56%
C 7242 5450 38 38 0.52% 0.70%
D 7242 5450 304 304 4.20% 5.58%

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 42709 318.57 652 638 132.1
A 15 169 38869 289.49 652 638 132.1
A 13 254 9970 70.66 652 638 132.1
B 5 172 1379965 11488.83 629 613 120.1
B 5 255 152520 1265.26 629 613 120.1
B 0 190 36877 302.05 629 613 120.1
C 15 214 230733 1560.97 635 639 147.4
C 0 10 128732 868.99 635 639 147.4
C 15 159 38333 255.72 635 639 147.4
D 8 195 1580702 10364.78 623 607 152.4
D 7 223 710063 4653.74 623 607 152.4
D 2 250 220768 1444.17 623 607 152.4

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