ASTROSAT CZTI

Data Quality Report

Orbit 52016

Creation date: 2025-05-11T00:11:24.109543
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/AS1C09_011T06_9000006468_52016cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52016cztM0_level2_quad_clean.evt
Size (bytes)616,587,84085,271,040
Size588.0 MB 81.3 MB
Events in quadrant A4,065,835589,012
Events in quadrant B4,890,793617,907
Events in quadrant C6,852,344471,225
Events in quadrant D6,539,498474,873

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163491
B0187431
C0246736
D0238051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61401732.817590%
B61403665.960912%
C6139131221.371559%
D614089314.543974%

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 7234 6139 100 100 1.38% 1.63%
B 7234 6139 174 174 2.41% 2.83%
C 7233 6138 1244 1244 17.20% 20.27%
D 7234 6139 903 903 12.48% 14.71%

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 4 95 360898 2269.6 643 628 158.7
A 4 3 302100 1899.19 643 628 158.7
A 3 14 255340 1604.62 643 628 158.7
B 7 0 946848 7104.6 637 617 133.2
B 5 185 232325 1739.74 637 617 133.2
B 12 32 216919 1624.06 637 617 133.2
C 15 224 3215338 19911.64 579 571 161.5
C 4 5 847138 5243.47 579 571 161.5
C 13 3 259916 1606.33 579 571 161.5
D 12 17 1959501 11579.82 599 572 169.2
D 8 176 740274 4372.6 599 572 169.2
D 13 170 464334 2741.44 599 572 169.2

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