ASTROSAT CZTI

Data Quality Report

Orbit 35627

Creation date: 2024-06-27T21:15:54.262163
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/AS1T05_028T01_9000005100_35627cztM0_level2.evt modeM0/AS1T05_028T01_9000005100_35627cztM0_level2_quad_clean.evt
Size (bytes)436,599,36062,510,400
Size416.4 MB 59.6 MB
Events in quadrant A2,516,318391,589
Events in quadrant B3,821,607384,337
Events in quadrant C3,142,181381,208
Events in quadrant D3,390,485372,622

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107503
B0147212
C0122862
D0135242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5175170.328502%
B51753526.801932%
C51752184.212560%
D51751793.458937%

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 6968 5176 6 6 0.09% 0.12%
B 6968 5176 248 248 3.56% 4.79%
C 6968 5176 178 178 2.55% 3.44%
D 6968 5176 163 163 2.34% 3.15%

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 140771 1171.93 594 582 119.6
A 15 169 48435 400.03 594 582 119.6
A 7 3 11534 91.55 594 582 119.6
B 5 172 1457252 13063.53 581 567 111.5
B 0 189 36168 319.27 581 567 111.5
B 12 111 13559 116.51 581 567 111.5
C 0 10 674744 5055.56 574 577 133.4
C 15 214 212349 1588.07 574 577 133.4
C 14 67 7837 54.44 574 577 133.4
D 7 80 319610 2234.38 580 566 142.8
D 13 249 230218 1608.34 580 566 142.8
D 14 52 195869 1367.78 580 566 142.8

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