ASTROSAT CZTI

Data Quality Report

Orbit 55231

Creation date: 2025-12-13T10:33:41.193176
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_55231cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55231cztM0_level2_quad_clean.evt
Size (bytes)525,196,800111,479,040
Size500.9 MB 106.3 MB
Events in quadrant A4,396,831743,329
Events in quadrant B3,637,265779,446
Events in quadrant C4,978,983687,302
Events in quadrant D5,834,245633,904

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186242
B0167782
C0202542
D0228232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76431431.870993%
B76431912.499019%
C76433564.657857%
D76436017.863404%

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 9218 7644 123 123 1.33% 1.61%
B 9218 7644 54 54 0.59% 0.71%
C 9218 7645 274 274 2.97% 3.58%
D 9218 7644 556 556 6.03% 7.27%

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 12 115 915952 4473.95 827 808 204.5
A 4 205 164429 799.91 827 808 204.5
A 3 14 28540 135.58 827 808 204.5
B 2 249 150526 850.57 812 780 176.1
B 10 247 141823 801.14 812 780 176.1
B 0 182 47214 263.75 812 780 176.1
C 13 3 378145 1741.01 790 782 216.7
C 12 254 340219 1566.03 790 782 216.7
C 10 22 332235 1529.2 790 782 216.7
D 2 249 1443636 6589.83 773 737 219.0
D 11 129 895147 4084.84 773 737 219.0
D 2 31 151865 690.21 773 737 219.0

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