ASTROSAT CZTI

Data Quality Report

Orbit 58705

Creation date: 2026-08-04T04:12:06.347858
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_004T06_9000006594_58705cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58705cztM0_level2_quad_clean.evt
Size (bytes)538,001,280109,679,040
Size513.1 MB 104.6 MB
Events in quadrant A4,056,752730,304
Events in quadrant B4,066,201768,693
Events in quadrant C4,524,291692,603
Events in quadrant D6,688,305609,236

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171022
B0173712
C0187372
D0251744

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7466831.111706%
B74661842.464506%
C74662353.147602%
D746682010.983123%

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 7646 7467 34 34 0.44% 0.46%
B 7646 7467 54 54 0.71% 0.72%
C 7646 7467 156 156 2.04% 2.09%
D 7646 7467 680 680 8.89% 9.11%

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 12 114 406373 1963.44 832 811 206.6
A 3 14 149931 721.93 832 811 206.6
A 10 17 135535 652.24 832 811 206.6
B 6 255 402780 2281.02 820 788 176.2
B 5 185 125618 708.32 820 788 176.2
B 8 234 42960 239.3 820 788 176.2
C 4 5 416327 1869.58 809 798 222.3
C 14 254 284748 1277.57 809 798 222.3
C 6 223 262338 1176.74 809 798 222.3
D 11 129 2089214 9469.78 779 743 220.5
D 2 249 394469 1785.28 779 743 220.5
D 2 120 340811 1541.98 779 743 220.5

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