ASTROSAT CZTI

Data Quality Report

Orbit 34815

Creation date: 2022-03-07T11:48:42.218411
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_005T01_9000004992_34815cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34815cztM0_level2_quad_clean.evt
Size (bytes)737,262,72087,569,280
Size703.1 MB 83.5 MB
Events in quadrant A2,995,479707,589
Events in quadrant B12,241,645207,164
Events in quadrant C3,038,190708,452
Events in quadrant D3,708,396669,790

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121443
B0397542
C0119392
D0146172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5089130.255453%
B5089477193.751228%
C50891001.965023%
D5089941.847121%

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 7152 5090 1 1 0.01% 0.02%
B 7151 5088 4623 4623 64.65% 90.86%
C 7152 5090 66 66 0.92% 1.30%
D 7152 5090 85 85 1.19% 1.67%

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 15 169 289980 2357.29 616 605 122.8
A 0 247 233851 1900.06 616 605 122.8
A 10 83 50299 404.81 616 605 122.8
B 4 251 11279343 266595.09 218 213 42.3
B 5 172 56208 1323.51 218 213 42.3
B 5 255 20779 486.1 218 213 42.3
C 0 10 249502 1793.83 602 606 138.8
C 15 214 234022 1682.26 602 606 138.8
C 14 67 173837 1248.5 602 606 138.8
D 8 195 552107 3430.3 597 585 160.8
D 12 227 431917 2682.76 597 585 160.8
D 12 233 99789 617.02 597 585 160.8

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