ASTROSAT CZTI

Data Quality Report

Orbit 59307

Creation date: 2026-09-13T16:23:40.794219
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_021T06_9000006606_59307cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59307cztM0_level2_quad_clean.evt
Size (bytes)506,234,88096,249,600
Size482.8 MB 91.8 MB
Events in quadrant A2,989,378644,791
Events in quadrant B4,192,169673,195
Events in quadrant C3,074,688610,357
Events in quadrant D7,962,232518,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138631
B0169531
C0142321
D0284031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6707721.073505%
B67074146.172655%
C6708570.849732%
D670882512.298748%

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 7522 6707 15 15 0.20% 0.22%
B 7522 6707 331 331 4.40% 4.94%
C 7523 6708 31 31 0.41% 0.46%
D 7523 6708 795 795 10.57% 11.85%

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 3 245 84891 473.4 726 708 177.8
A 7 64 63500 353.11 726 708 177.8
A 14 238 12109 64.11 726 708 177.8
B 4 236 956215 6337.69 703 677 150.8
B 5 236 267720 1771.19 703 677 150.8
B 4 201 51623 337.9 703 677 150.8
C 15 200 138901 719.97 699 692 192.0
C 12 252 77793 401.64 699 692 192.0
C 14 254 34423 175.71 699 692 192.0
D 12 110 3366884 17922.63 666 633 187.8
D 11 129 1186122 6311.79 666 633 187.8
D 2 249 400981 2131.54 666 633 187.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct