ASTROSAT CZTI

Data Quality Report

Orbit 36506

Creation date: 2022-06-29T16:11:01.620894
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_035T01_9000005214_36506cztM0_level2.evt modeM0/AS1T05_035T01_9000005214_36506cztM0_level2_quad_clean.evt
Size (bytes)513,737,28067,040,640
Size489.9 MB 63.9 MB
Events in quadrant A2,932,342432,505
Events in quadrant B3,183,480434,213
Events in quadrant C2,978,549429,325
Events in quadrant D6,116,094373,242

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116833
B0124832
C0116842
D0218502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5147280.544006%
B5147931.806878%
C5147500.971440%
D514761611.968137%

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 7150 5148 13 13 0.18% 0.25%
B 7150 5148 51 51 0.71% 0.99%
C 7150 5148 29 29 0.41% 0.56%
D 7150 5148 652 652 9.12% 12.67%

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 10 83 197126 1464.88 674 667 134.1
A 7 3 108573 804.59 674 667 134.1
A 15 223 10825 75.74 674 667 134.1
B 5 172 382043 3094.57 661 646 123.2
B 4 171 97598 786.65 661 646 123.2
B 5 255 29740 236.06 661 646 123.2
C 15 214 224804 1492.17 648 653 150.2
C 0 10 191515 1270.56 648 653 150.2
C 15 159 29564 192.46 648 653 150.2
D 12 227 2150524 14287.57 625 609 150.5
D 1 20 416928 2766.71 625 609 150.5
D 12 235 202126 1339.21 625 609 150.5

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