ASTROSAT CZTI

Data Quality Report

Orbit 58134

Creation date: 2026-06-30T00:55:29.201798
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_042T02_9000006586_58134cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58134cztM0_level2_quad_clean.evt
Size (bytes)449,982,72099,276,480
Size429.1 MB 94.7 MB
Events in quadrant A3,092,596672,117
Events in quadrant B4,802,695671,012
Events in quadrant C3,408,996635,333
Events in quadrant D4,856,731582,159

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133012
B0184202
C0143542
D0187382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6380901.410658%
B63805608.777429%
C6380901.410658%
D63803295.156740%

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 7565 6381 6 6 0.08% 0.09%
B 7565 6381 361 361 4.77% 5.66%
C 7565 6381 33 33 0.44% 0.52%
D 7565 6381 263 263 3.48% 4.12%

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 11 3 96605 516.26 757 737 185.7
A 10 251 22454 116.95 757 737 185.7
A 3 14 12500 63.34 757 737 185.7
B 10 128 1422209 9213.9 713 686 154.3
B 5 172 369138 2388.2 713 686 154.3
B 5 185 57102 365.67 713 686 154.3
C 12 252 351799 1759.24 728 720 199.6
C 6 223 71099 352.67 728 720 199.6
C 13 3 66682 330.53 728 720 199.6
D 12 110 804057 3904.84 722 691 205.7
D 8 160 778145 3778.89 722 691 205.7
D 7 222 238022 1153.57 722 691 205.7

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