ASTROSAT CZTI

Data Quality Report

Orbit 25256

Creation date: 2024-06-27T19:15:34.985944
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/AS1A09_027T01_9000003694_25256cztM0_level2.evt modeM0/AS1A09_027T01_9000003694_25256cztM0_level2_quad_clean.evt
Size (bytes)655,799,040109,952,640
Size625.4 MB 104.9 MB
Events in quadrant A2,848,268790,984
Events in quadrant B2,966,927788,621
Events in quadrant C3,615,013729,514
Events in quadrant D10,047,170623,306

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120950
B0123780
C0142320
D0337980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5667500.882301%
B5668611.076217%
C56682083.669725%
D5668238342.043049%

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 6872 5668 0 0 0.00% 0.00%
B 6873 5669 4 4 0.06% 0.07%
C 6873 5669 69 69 1.00% 1.22%
D 6873 5669 2063 2063 30.02% 36.39%

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 3 1 21048 140.17 729 715 145.1
A 11 29 12536 81.49 729 715 145.1
A 13 254 9601 61.26 729 715 145.1
B 0 190 53704 395.49 717 701 134.0
B 0 229 53617 394.85 717 701 134.0
B 12 111 15013 106.79 717 701 134.0
C 2 16 635691 4048.58 682 689 156.8
C 14 238 110345 699.13 682 689 156.8
C 3 233 101402 642.12 682 689 156.8
D 1 239 3081735 20509.16 630 612 150.2
D 9 35 2101654 13985.35 630 612 150.2
D 8 195 1936662 12887.1 630 612 150.2

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