ASTROSAT CZTI

Data Quality Report

Orbit 56730

Creation date: 2026-03-24T15:46:27.119412
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_083T05_9000006560_56730cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56730cztM0_level2_quad_clean.evt
Size (bytes)551,430,720124,286,400
Size525.9 MB 118.5 MB
Events in quadrant A5,994,108795,823
Events in quadrant B4,072,469890,160
Events in quadrant C5,098,146739,494
Events in quadrant D4,566,474729,733

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241120
B0188090
C0216620
D0201010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87634675.329225%
B8763590.673285%
C87645235.967595%
D87641221.392058%

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 8763 8763 388 388 4.43% 4.43%
B 8763 8763 18 18 0.21% 0.21%
C 8764 8764 201 201 2.29% 2.29%
D 8764 8764 104 104 1.19% 1.19%

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 62 1382039 5931.53 939 913 232.8
A 3 14 673121 2886.94 939 913 232.8
A 10 251 253170 1083.37 939 913 232.8
B 4 206 102945 490.1 953 916 208.2
B 10 247 63331 299.82 953 916 208.2
B 7 252 37492 175.7 953 916 208.2
C 13 3 939765 3869.52 890 883 242.6
C 15 208 300800 1236.08 890 883 242.6
C 15 230 78154 318.47 890 883 242.6
D 2 249 420179 1641.5 915 876 255.4
D 2 207 148873 579.38 915 876 255.4
D 2 252 147792 575.15 915 876 255.4

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