ASTROSAT CZTI

Data Quality Report

Orbit 54560

Creation date: 2025-10-29T06:29:19.852122
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_127T09_9000006520_54560cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54560cztM0_level2_quad_clean.evt
Size (bytes)434,620,80093,873,600
Size414.5 MB 89.5 MB
Events in quadrant A3,602,106626,831
Events in quadrant B4,164,103634,699
Events in quadrant C3,185,754605,794
Events in quadrant D4,646,076535,312

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149922
B0169853
C0140232
D0182552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63032223.522132%
B63025168.187877%
C63021021.618534%
D63024667.394478%

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 7488 6304 133 133 1.78% 2.11%
B 7487 6303 284 284 3.79% 4.51%
C 7487 6303 39 39 0.52% 0.62%
D 7487 6303 370 370 4.94% 5.87%

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 11 3 523975 3027.4 703 688 172.9
A 3 14 155824 897.52 703 688 172.9
A 14 235 80336 460.79 703 688 172.9
B 8 234 768065 5416.88 665 642 141.7
B 10 14 306734 2160.56 665 642 141.7
B 0 213 177698 1249.76 665 642 141.7
C 1 45 110154 573.01 690 682 191.0
C 13 3 106709 554.97 690 682 191.0
C 6 223 79165 410.8 690 682 191.0
D 15 94 1464367 7727.52 664 632 189.4
D 2 172 349990 1844.37 664 632 189.4
D 1 3 129378 679.69 664 632 189.4

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