ASTROSAT CZTI

Data Quality Report

Orbit 00123

Creation date: 2024-06-27T13:56:42.151752
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/AS1P01_003T01_9000000002_00123cztM0_level2.evt modeM0/AS1P01_003T01_9000000002_00123cztM0_level2_quad_clean.evt
Size (bytes)1,048,841,28050,287,680
Size1000.3 MB 48.0 MB
Events in quadrant A7,261,246285,624
Events in quadrant B7,625,959291,890
Events in quadrant C8,474,406273,265
Events in quadrant D8,029,758276,122

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255402
B0266681
C0292021
D0278091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A565450.088433%
B565460.106120%
C56542284.032543%
D56541071.892466%

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 7277 5656 211 211 2.90% 3.73%
B 7277 5656 259 259 3.56% 4.58%
C 7277 5656 979 979 13.45% 17.31%
D 7277 5656 477 477 6.55% 8.43%

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 13 1 22409 67.35 1830 1785 306.2
A 13 174 18602 54.92 1830 1785 306.2
A 0 166 17916 52.68 1830 1785 306.2
B 0 235 403563 1131.03 1808 1784 355.2
B 5 216 35770 95.67 1808 1784 355.2
B 4 238 35135 93.89 1808 1784 355.2
C 9 204 1238913 2721.45 1615 1675 454.6
C 8 224 692091 1518.65 1615 1675 454.6
C 9 185 38447 80.88 1615 1675 454.6
D 12 207 310464 670.06 1726 1738 460.7
D 1 55 199275 428.73 1726 1738 460.7
D 5 35 123618 264.53 1726 1738 460.7

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