ASTROSAT CZTI

Data Quality Report

Orbit 58458

Creation date: 2026-07-18T13:22:31.134515
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_045T01_9000006590_58458cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58458cztM0_level2_quad_clean.evt
Size (bytes)398,453,76060,655,680
Size380.0 MB 57.8 MB
Events in quadrant A2,006,970437,547
Events in quadrant B7,230,398277,188
Events in quadrant C2,086,303414,067
Events in quadrant D3,062,995380,928

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094660
B0246710
C097500
D0123840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A464870.150602%
B4648208144.771945%
C4648410.882100%
D46491783.828780%

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 4648 4648 6 6 0.13% 0.13%
B 4647 4647 1949 1949 41.94% 41.94%
C 4648 4648 41 41 0.88% 0.88%
D 4649 4649 176 176 3.79% 3.79%

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 80 64511 518.0 493 479 123.6
A 13 248 9962 76.71 493 479 123.6
A 13 254 8823 67.5 493 479 123.6
B 2 249 5315361 71629.92 340 329 74.2
B 5 172 279036 3756.09 340 329 74.2
B 8 128 161351 2170.07 340 329 74.2
C 13 3 93660 705.14 474 470 132.2
C 14 245 36154 270.01 474 470 132.2
C 12 254 22498 166.68 474 470 132.2
D 8 240 697911 5184.79 468 446 134.5
D 2 249 107359 794.77 468 446 134.5
D 2 31 94615 700.03 468 446 134.5

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