ASTROSAT CZTI

Data Quality Report

Orbit 52648

Creation date: 2025-06-23T16:25:08.638989
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_011T07_9000006480_52648cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52648cztM0_level2_quad_clean.evt
Size (bytes)653,460,48093,248,640
Size623.2 MB 88.9 MB
Events in quadrant A3,647,143644,187
Events in quadrant B4,726,113654,282
Events in quadrant C6,244,866558,615
Events in quadrant D9,028,534478,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155820
B0191380
C0236100
D0318270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7001390.557063%
B70014536.470504%
C700174010.569919%
D7001152921.839737%

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 7001 7001 11 11 0.16% 0.16%
B 7001 7001 340 340 4.86% 4.86%
C 7001 7001 813 813 11.61% 11.61%
D 7001 7001 1479 1479 21.13% 21.13%

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 14 239 304669 1713.35 715 697 177.4
A 3 14 163632 918.39 715 697 177.4
A 8 246 131657 738.16 715 697 177.4
B 12 32 807656 5488.65 693 668 147.0
B 10 247 390187 2649.28 693 668 147.0
B 8 234 234878 1592.95 693 668 147.0
C 1 3 1587616 8579.73 667 659 185.0
C 15 248 805269 4350.05 667 659 185.0
C 2 239 573490 3096.96 667 659 185.0
D 15 125 3720901 20567.53 631 602 180.9
D 12 2 1067735 5899.6 631 602 180.9
D 2 153 372123 2053.94 631 602 180.9

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