ASTROSAT CZTI

Data Quality Report

Orbit 52959

Creation date: 2025-07-17T13:24:41.457616
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/AS1A13_003T01_9000006486_52959cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52959cztM0_level2_quad_clean.evt
Size (bytes)889,064,64079,306,560
Size847.9 MB 75.6 MB
Events in quadrant A16,739,934151,130
Events in quadrant B3,332,105680,117
Events in quadrant C6,472,444566,255
Events in quadrant D5,849,799536,218

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0539900
B0147940
C0238540
D0220390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66526652100.000000%
B66521422.134696%
C665290313.574865%
D665281512.251954%

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 7611 6651 6591 6591 86.60% 99.10%
B 7612 6652 73 73 0.96% 1.10%
C 7612 6653 888 888 11.67% 13.35%
D 7612 6653 734 734 9.64% 11.03%

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 9 191 15677158 342304.13 177 173 45.8
A 4 249 103902 2264.9 177 173 45.8
A 8 25 101183 2205.54 177 173 45.8
B 10 63 157123 1072.8 684 661 145.8
B 10 254 74324 505.08 684 661 145.8
B 5 172 58848 398.97 684 661 145.8
C 2 239 1659600 9382.2 637 632 176.8
C 1 241 627674 3546.2 637 632 176.8
C 2 12 403074 2275.99 637 632 176.8
D 2 62 1528122 8506.0 630 601 179.6
D 8 176 1148747 6393.45 630 601 179.6
D 15 78 172489 957.16 630 601 179.6

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