ASTROSAT CZTI

Data Quality Report

Orbit 38070

Creation date: 2024-06-27T21:48:03.999677
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/AS1A11_047T09_9000005362_38070cztM0_level2.fits modeM0/AS1A11_047T09_9000005362_38070cztM0_level2_quad_clean.evt
Size (bytes)325,177,92097,732,800
Size310.1 MB 93.2 MB
Events in quadrant A2,852,776673,685
Events in quadrant B2,758,151691,607
Events in quadrant C2,676,007651,454
Events in quadrant D3,353,480585,666

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115323
B0113652
C0108982
D0133972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5093180.353426%
B5093360.706853%
C5093140.274887%
D50931452.847045%

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 7127 5094 4 4 0.06% 0.08%
B 7127 5094 23 23 0.32% 0.45%
C 7127 5094 9 9 0.13% 0.18%
D 7127 5094 106 106 1.49% 2.08%

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 344962 2747.59 624 614 125.3
A 7 3 59107 466.72 624 614 125.3
A 13 6 11201 84.47 624 614 125.3
B 4 171 58328 480.78 627 613 120.0
B 0 189 52634 433.34 627 613 120.0
B 5 184 44352 364.35 627 613 120.0
C 15 214 212625 1494.16 609 615 141.9
C 0 10 50256 349.85 609 615 141.9
C 1 23 15345 103.81 609 615 141.9
D 5 222 192201 1322.8 595 580 144.9
D 12 227 188685 1298.52 595 580 144.9
D 13 249 138233 950.24 595 580 144.9

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