ASTROSAT CZTI

Data Quality Report

Orbit 56829

Creation date: 2026-03-30T23:01:50.418728
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_083T03_9000006562_56829cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56829cztM0_level2_quad_clean.evt
Size (bytes)489,467,52095,742,720
Size466.8 MB 91.3 MB
Events in quadrant A5,504,729625,497
Events in quadrant B3,929,391665,054
Events in quadrant C4,665,471581,963
Events in quadrant D3,505,674565,163

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211101
B0163811
C0186761
D0152511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66171131.707723%
B66171632.463352%
C66173004.533777%
D6617991.496146%

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 7392 6618 46 46 0.62% 0.70%
B 7392 6618 76 76 1.03% 1.15%
C 7392 6618 223 223 3.02% 3.37%
D 7392 6618 82 82 1.11% 1.24%

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 14 2427960 14039.61 699 681 172.9
A 10 251 205956 1187.33 699 681 172.9
A 4 13 58330 333.45 699 681 172.9
B 5 185 779911 5299.09 687 662 147.1
B 10 16 189133 1281.65 687 662 147.1
B 0 245 31510 209.77 687 662 147.1
C 9 38 953223 5234.14 665 657 182.0
C 13 3 352714 1934.47 665 657 182.0
C 15 230 171302 937.65 665 657 182.0
D 2 249 364183 1908.66 674 642 190.5
D 2 31 212175 1110.59 674 642 190.5
D 6 239 113485 592.45 674 642 190.5

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