ASTROSAT CZTI

Data Quality Report

Orbit 56459

Creation date: 2026-03-06T04:58:19.963547
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_060T01_9000006556_56459cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56459cztM0_level2_quad_clean.evt
Size (bytes)695,882,88080,089,920
Size663.6 MB 76.4 MB
Events in quadrant A4,842,560555,782
Events in quadrant B9,895,652333,550
Events in quadrant C4,784,758550,842
Events in quadrant D5,738,192536,393

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189451
B0338841
C0188391
D0216651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64275849.086666%
B6427314448.918625%
C64274446.908355%
D64271281.991598%

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 7407 6428 532 532 7.18% 8.28%
B 7407 6428 2671 2671 36.06% 41.55%
C 7407 6428 440 440 5.94% 6.85%
D 7407 6428 115 115 1.55% 1.79%

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 3 1142541 7040.44 652 636 162.2
A 4 206 300612 1849.51 652 636 162.2
A 0 8 241658 1486.03 652 636 162.2
B 5 172 6659318 54165.37 570 550 122.9
B 4 206 425198 3454.28 570 550 122.9
B 0 63 301983 2451.99 570 550 122.9
C 12 254 1127243 6358.62 641 635 177.2
C 13 3 509965 2874.68 641 635 177.2
C 15 230 203853 1146.97 641 635 177.2
D 9 49 2349250 12859.85 645 618 182.6
D 2 249 340412 1860.53 645 618 182.6
D 7 96 111537 607.33 645 618 182.6

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