ASTROSAT CZTI

Data Quality Report

Orbit 41867

Creation date: 2024-06-27T22:33:49.380386
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_001T11_9000005710_41867cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41867cztM0_level2_quad_clean.evt
Size (bytes)363,686,40081,656,640
Size346.8 MB 77.9 MB
Events in quadrant A3,851,472556,744
Events in quadrant B2,328,910583,438
Events in quadrant C2,939,300519,518
Events in quadrant D3,966,307473,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145232
B0101152
C0116442
D0150532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48372555.271863%
B4837120.248088%
C48372635.437254%
D48374549.385983%

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 6989 4838 150 150 2.15% 3.10%
B 6989 4838 6 6 0.09% 0.12%
C 6989 4838 263 263 3.76% 5.44%
D 6989 4838 373 373 5.34% 7.71%

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 14 24 1186592 11105.37 531 521 106.8
A 10 83 535823 5012.12 531 521 106.8
A 4 0 66022 613.3 531 521 106.8
B 5 255 50262 495.75 533 519 100.3
B 0 245 49706 490.21 533 519 100.3
B 3 112 42416 417.56 533 519 100.3
C 0 10 796836 6870.85 498 501 115.9
C 15 214 192937 1660.35 498 501 115.9
C 15 111 4057 30.68 498 501 115.9
D 13 249 852537 7020.38 502 488 121.4
D 12 79 593689 4887.63 502 488 121.4
D 2 249 267575 2200.64 502 488 121.4

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