ASTROSAT CZTI

Data Quality Report

Orbit 57601

Creation date: 2026-05-21T21:25:51.567174
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_070T08_9000006576_57601cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57601cztM0_level2_quad_clean.evt
Size (bytes)487,782,720109,722,240
Size465.2 MB 104.6 MB
Events in quadrant A3,391,061730,132
Events in quadrant B3,768,900780,673
Events in quadrant C3,964,619696,961
Events in quadrant D6,336,527582,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156440
B0164970
C0173591
D0242860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7652100.130685%
B7653680.888540%
C7652831.084684%
D765299713.029273%

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 7652 7652 1 1 0.01% 0.01%
B 7653 7653 23 23 0.30% 0.30%
C 7652 7652 75 75 0.98% 0.98%
D 7652 7652 865 865 11.30% 11.30%

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 14 151619 743.37 826 803 202.9
A 7 14 21145 100.26 826 803 202.9
A 4 3 12727 58.77 826 803 202.9
B 5 185 120455 691.07 813 782 173.2
B 10 247 114192 654.9 813 782 173.2
B 0 245 82169 469.98 813 782 173.2
C 15 224 600135 2745.06 799 790 218.3
C 14 254 84930 385.37 799 790 218.3
C 12 2 42958 193.13 799 790 218.3
D 15 142 2015095 9363.87 753 719 215.1
D 8 240 616536 2862.64 753 719 215.1
D 2 249 278803 1292.68 753 719 215.1

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