ASTROSAT CZTI

Data Quality Report

Orbit 58169

Creation date: 2026-06-30T16:29:24.941575
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_58169cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58169cztM0_level2_quad_clean.evt
Size (bytes)1,233,129,60080,928,000
Size1.1 GB 77.2 MB
Events in quadrant A3,701,851785,597
Events in quadrant B19,670,92878,607
Events in quadrant C3,749,794744,517
Events in quadrant D17,896,494276,872

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169650
B0640732
C0173060
D0586320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8121130.160079%
B8120745491.798030%
C8120130.160099%
D8121551667.922670%

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 8121 8121 2 2 0.02% 0.02%
B 8120 8120 7135 7135 87.87% 87.87%
C 8120 8120 11 11 0.14% 0.14%
D 8121 8121 6116 6116 75.31% 75.31%

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 2 143 48340 212.41 904 879 223.4
A 4 3 45323 198.91 904 879 223.4
A 11 3 36168 157.94 904 879 223.4
B 10 128 17495800 254323.43 317 305 68.8
B 2 249 757928 11013.19 317 305 68.8
B 5 185 68254 987.74 317 305 68.8
C 15 208 55389 230.34 869 862 236.7
C 8 208 52824 219.51 869 862 236.7
C 12 252 51772 215.06 869 862 236.7
D 12 110 13777106 69583.32 699 669 198.0
D 8 240 409506 2064.99 699 669 198.0
D 8 160 345562 1742.02 699 669 198.0

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