ASTROSAT CZTI

Data Quality Report

Orbit 56230

Creation date: 2026-02-18T15:47:40.768796
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_083T04_9000006550_56230cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56230cztM0_level2_quad_clean.evt
Size (bytes)751,199,04080,334,720
Size716.4 MB 76.6 MB
Events in quadrant A15,196,685138,488
Events in quadrant B3,651,198695,514
Events in quadrant C4,383,256585,548
Events in quadrant D4,080,207567,479

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494817
B0152541
C0175391
D0164551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6382528782.842369%
B63831562.443992%
C63834977.786307%
D63832373.712988%

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 7517 6383 5188 5188 69.02% 81.28%
B 7518 6384 25 25 0.33% 0.39%
C 7518 6384 385 385 5.12% 6.03%
D 7518 6384 159 159 2.11% 2.49%

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 9400536 93463.49 402 391 100.6
A 15 32 1849953 18389.77 402 391 100.6
A 8 176 1797382 17867.07 402 391 100.6
B 4 171 417960 2778.2 703 676 150.2
B 1 255 109049 721.53 703 676 150.2
B 0 63 93330 616.87 703 676 150.2
C 9 237 738000 3989.71 677 670 184.8
C 5 250 272668 1471.78 677 670 184.8
C 15 198 272317 1469.89 677 670 184.8
D 2 249 282925 1432.24 688 657 197.1
D 8 129 276772 1401.02 688 657 197.1
D 7 96 226615 1146.52 688 657 197.1

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