ASTROSAT CZTI

Data Quality Report

Orbit 55298

Creation date: 2025-12-17T22:10:16.723304
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_009T01_9000006534_55298cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55298cztM0_level2_quad_clean.evt
Size (bytes)456,566,40097,925,760
Size435.4 MB 93.4 MB
Events in quadrant A3,005,408650,792
Events in quadrant B3,140,286690,969
Events in quadrant C3,423,367618,303
Events in quadrant D6,803,455531,970

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140521
B0144741
C0153421
D0249293

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6788580.854449%
B6788841.237478%
C67891151.693917%
D678892813.671184%

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 7783 6788 8 8 0.10% 0.12%
B 7783 6789 32 32 0.41% 0.47%
C 7784 6790 100 100 1.28% 1.47%
D 7783 6788 860 860 11.05% 12.67%

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 7 7 37468 207.13 723 704 177.5
A 4 3 35610 196.67 723 704 177.5
A 3 78 35112 193.86 723 704 177.5
B 2 249 81362 530.27 709 685 152.1
B 0 199 75919 494.5 709 685 152.1
B 10 245 73496 478.57 709 685 152.1
C 9 38 281381 1461.61 699 692 192.0
C 13 3 241474 1253.81 699 692 192.0
C 14 254 65390 336.9 699 692 192.0
D 11 129 2825717 14798.51 673 646 190.9
D 3 12 336815 1760.95 673 646 190.9
D 6 239 325106 1699.61 673 646 190.9

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