ASTROSAT CZTI

Data Quality Report

Orbit 56662

Creation date: 2026-03-20T10:42:30.712736
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_083T06_9000006558_56662cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56662cztM0_level2_quad_clean.evt
Size (bytes)623,833,92087,013,440
Size594.9 MB 83.0 MB
Events in quadrant A3,019,392603,079
Events in quadrant B3,292,747642,997
Events in quadrant C9,481,434432,892
Events in quadrant D6,801,007507,732

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135171
B0143761
C0325581
D0246371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6423751.167679%
B64231642.553324%
C6423201831.418340%
D64235889.154601%

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 7263 6423 5 5 0.07% 0.08%
B 7263 6423 83 83 1.14% 1.29%
C 7263 6423 2048 2048 28.20% 31.89%
D 7263 6423 636 636 8.76% 9.90%

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 4 249 121951 713.61 691 674 169.9
A 8 249 50254 291.74 691 674 169.9
A 0 12 30635 176.3 691 674 169.9
B 4 156 209045 1426.75 678 653 146.1
B 4 21 82213 558.4 678 653 146.1
B 10 247 68232 462.68 678 653 146.1
C 15 205 6017088 36896.18 597 589 163.1
C 13 3 485033 2970.85 597 589 163.1
C 12 252 236004 1443.68 597 589 163.1
D 10 199 2100987 11319.15 649 619 185.6
D 2 249 1324080 7132.3 649 619 185.6
D 8 160 197353 1060.22 649 619 185.6

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