ASTROSAT CZTI

Data Quality Report

Orbit 58283

Creation date: 2026-07-06T22:44:06.586861
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_044T03_9000006588_58283cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58283cztM0_level2_quad_clean.evt
Size (bytes)736,623,36087,206,400
Size702.5 MB 83.2 MB
Events in quadrant A3,646,728650,923
Events in quadrant B4,690,058681,757
Events in quadrant C3,840,418632,056
Events in quadrant D14,540,810183,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159557
B0188681
C0165231
D0479831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70672333.297014%
B70684636.550651%
C70681782.518393%
D7068504271.335597%

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 7482 7068 62 62 0.83% 0.88%
B 7483 7068 200 200 2.67% 2.83%
C 7483 7069 85 85 1.14% 1.20%
D 7482 7067 4851 4851 64.84% 68.64%

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 4 238 207613 1082.35 768 748 191.1
A 3 245 114766 596.56 768 748 191.1
A 12 114 105470 547.92 768 748 191.1
B 4 206 612113 3835.74 743 715 159.4
B 2 249 359742 2252.43 743 715 159.4
B 4 158 162048 1012.16 743 715 159.4
C 12 252 337140 1651.71 744 740 203.7
C 6 223 182816 893.99 744 740 203.7
C 15 199 130856 638.86 744 740 203.7
D 12 110 12141717 103856.56 407 388 116.9
D 2 249 160301 1367.89 407 388 116.9
D 7 222 136593 1165.09 407 388 116.9

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