ASTROSAT CZTI

Data Quality Report

Orbit 55732

Creation date: 2026-01-16T14:56:21.466005
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_099T04_9000006540_55732cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55732cztM0_level2_quad_clean.evt
Size (bytes)955,791,36068,454,720
Size911.5 MB 65.3 MB
Events in quadrant A8,501,637432,789
Events in quadrant B12,351,064246,233
Events in quadrant C6,480,184475,164
Events in quadrant D7,541,583461,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297450
B0412540
C0237070
D0268970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6543205631.422895%
B6544418964.012836%
C6544135920.767115%
D6544135220.660147%

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 7498 6543 1602 1602 21.37% 24.48%
B 7499 6545 3929 3929 52.39% 60.03%
C 7499 6544 913 913 12.17% 13.95%
D 7499 6545 1111 1111 14.82% 16.97%

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 4572154 31952.64 579 564 143.1
A 12 115 1130718 7899.09 579 564 143.1
A 4 249 194261 1353.82 579 564 143.1
B 4 206 10594213 113162.1 428 411 93.6
B 0 199 47949 507.8 428 411 93.6
B 12 111 11059 113.74 428 411 93.6
C 15 199 2830284 17641.46 585 580 160.4
C 9 38 855603 5330.54 585 580 160.4
C 13 3 183143 1138.17 585 580 160.4
D 11 129 4441962 25799.64 611 584 172.1
D 6 239 327129 1896.88 611 584 172.1
D 8 245 275257 1595.56 611 584 172.1

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