ASTROSAT CZTI

Data Quality Report

Orbit 45126

Creation date: 2024-06-27T23:09:43.157889
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/AS1A13_017T02_9000006046_45126cztM0_level2.fits modeM0/AS1A13_017T02_9000006046_45126cztM0_level2_quad_clean.evt
Size (bytes)542,623,680111,617,280
Size517.5 MB 106.4 MB
Events in quadrant A7,033,943681,773
Events in quadrant B3,388,438810,459
Events in quadrant C3,111,072778,957
Events in quadrant D6,044,963652,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254662
B0143332
C0136592
D0224122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A654599815.248281%
B6545851.298701%
C6545380.580596%
D654567710.343774%

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 7725 6545 509 509 6.59% 7.78%
B 7725 6546 5 5 0.06% 0.08%
C 7725 6546 6 6 0.08% 0.09%
D 7725 6546 555 555 7.18% 8.48%

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 2373189 15922.32 727 713 149.0
A 15 223 1807952 12128.86 727 713 149.0
A 13 248 35550 233.8 727 713 149.0
B 0 183 83238 535.0 786 762 154.2
B 0 155 67107 430.36 786 762 154.2
B 3 112 61380 393.21 786 762 154.2
C 14 254 59378 323.39 774 781 181.2
C 2 14 14447 75.42 774 781 181.2
C 5 4 12331 63.74 774 781 181.2
D 13 249 1064485 5749.5 744 724 185.0
D 13 29 690943 3730.55 744 724 185.0
D 9 49 375945 2028.02 744 724 185.0

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