ASTROSAT CZTI

Data Quality Report

Orbit 34717

Creation date: 2022-03-02T17:12:10.779723
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_001T01_9000004982_34717cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34717cztM0_level2_quad_clean.evt
Size (bytes)534,556,80090,529,920
Size509.8 MB 86.3 MB
Events in quadrant A3,303,721591,489
Events in quadrant B3,239,248590,771
Events in quadrant C3,044,600594,092
Events in quadrant D6,199,258550,169

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136522
B0134011
C0125771
D0225431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59491181.983527%
B59491151.933098%
C5949370.621953%
D59494647.799630%

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 7262 5950 87 87 1.20% 1.46%
B 7262 5950 63 63 0.87% 1.06%
C 7262 5950 26 26 0.36% 0.44%
D 7262 5950 425 425 5.85% 7.14%

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 528270 3874.85 680 667 136.2
A 10 83 52280 379.06 680 667 136.2
A 9 143 51510 373.4 680 667 136.2
B 5 172 336794 2603.95 676 657 129.1
B 4 171 113582 874.8 676 657 129.1
B 4 232 23123 174.04 676 657 129.1
C 15 214 253690 1647.55 666 670 153.6
C 0 10 113522 734.84 666 670 153.6
C 0 207 42210 270.49 666 670 153.6
D 8 195 1094326 6321.47 649 635 173.0
D 14 52 1000072 5776.69 649 635 173.0
D 1 20 362338 2090.62 649 635 173.0

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