ASTROSAT CZTI

Data Quality Report

Orbit 12445

Creation date: 2024-06-27T16:27:28.329265
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_174T01_9000001850_12445cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12445cztM0_level2_quad_clean.evt
Size (bytes)601,755,84094,282,560
Size573.9 MB 89.9 MB
Events in quadrant A5,208,267622,024
Events in quadrant B3,954,006625,180
Events in quadrant C3,044,076633,469
Events in quadrant D5,588,565531,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198463
B0158472
C0131092
D0209702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63334797.563556%
B63333004.737091%
C6333110.173693%
D633393114.700774%

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 7559 6335 288 288 3.81% 4.55%
B 7559 6334 227 227 3.00% 3.58%
C 7559 6335 2 2 0.03% 0.03%
D 7559 6335 760 760 10.05% 12.00%

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 0 23 1049487 6682.76 776 764 156.9
A 13 251 435494 2770.22 776 764 156.9
A 1 162 197635 1254.52 776 764 156.9
B 4 239 765670 5233.59 773 757 146.2
B 0 187 46240 311.2 773 757 146.2
B 11 51 37740 253.04 773 757 146.2
C 15 208 30187 164.9 772 780 178.3
C 14 234 6262 30.74 772 780 178.3
C 13 61 5644 27.27 772 780 178.3
D 1 52 2694562 15865.47 705 685 169.8
D 13 104 86411 504.88 705 685 169.8
D 13 249 50544 293.64 705 685 169.8

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