ASTROSAT CZTI

Data Quality Report

Orbit 11438

Creation date: 2024-06-27T16:12:46.540856
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/AS1A04_021T02_9000001676_11438cztM0_level2.evt modeM0/AS1A04_021T02_9000001676_11438cztM0_level2_quad_clean.evt
Size (bytes)383,719,68065,033,280
Size365.9 MB 62.0 MB
Events in quadrant A2,584,063393,303
Events in quadrant B3,644,195384,461
Events in quadrant C2,445,856425,591
Events in quadrant D2,587,491395,878

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112401
B0143830
C0108860
D0114840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5277380.720106%
B52772905.495547%
C5277170.322153%
D5277320.606405%

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 5617 5278 4 4 0.07% 0.08%
B 5617 5278 137 137 2.44% 2.60%
C 5617 5278 0 0 0.00% 0.00%
D 5617 5278 14 14 0.25% 0.27%

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 9 143 41460 313.62 630 616 130.2
A 1 162 34843 262.81 630 616 130.2
A 1 178 19487 144.9 630 616 130.2
B 4 239 614770 5139.08 619 601 119.5
B 3 64 190516 1589.12 619 601 119.5
B 10 245 166420 1387.49 619 601 119.5
C 8 128 7404 46.22 623 628 146.6
C 13 61 4600 27.09 623 628 146.6
C 8 112 4314 25.14 623 628 146.6
D 1 52 74187 488.91 616 597 150.5
D 10 253 41318 270.54 616 597 150.5
D 2 120 31020 202.12 616 597 150.5

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