ASTROSAT CZTI

Data Quality Report

Orbit 54951

Creation date: 2025-11-24T14:07:44.450372
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/AS1A14_014T01_9000006528_54951cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54951cztM0_level2_quad_clean.evt
Size (bytes)663,287,04071,703,360
Size632.6 MB 68.4 MB
Events in quadrant A3,994,112543,043
Events in quadrant B2,630,960641,799
Events in quadrant C3,191,477557,886
Events in quadrant D14,263,0484,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162421
B0124921
C0140501
D0465401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60614998.232965%
B6061661.088929%
C60611372.260353%
D6062602999.455625%

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 7160 6061 445 445 6.22% 7.34%
B 7160 6061 2 2 0.03% 0.03%
C 7160 6061 102 102 1.42% 1.68%
D 7161 6062 4985 4985 69.61% 82.23%

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 15 32 1504813 9755.71 622 605 154.2
A 3 14 28030 177.87 622 605 154.2
A 0 8 25116 158.97 622 605 154.2
B 2 249 35392 248.65 647 625 139.8
B 7 252 25007 174.38 647 625 139.8
B 12 111 16660 114.68 647 625 139.8
C 4 5 250010 1416.43 632 626 176.1
C 14 254 166547 942.38 632 626 176.1
C 12 252 95476 538.72 632 626 176.1
D 15 94 12767809 324573.16 129 122 39.3
D 11 129 824902 20967.11 129 122 39.3
D 3 12 53547 1358.14 129 122 39.3

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