ASTROSAT CZTI

Data Quality Report

Orbit 58191

Creation date: 2026-06-30T20:05:00.374444
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_58191cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58191cztM0_level2_quad_clean.evt
Size (bytes)427,392,00099,734,400
Size407.6 MB 95.1 MB
Events in quadrant A3,072,697664,813
Events in quadrant B5,042,330687,082
Events in quadrant C3,015,976634,243
Events in quadrant D4,178,183575,184

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136301
B0193511
C0136631
D0169021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6577861.307587%
B65784206.384919%
C6578821.246580%
D65783064.651870%

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 7642 6578 2 2 0.03% 0.03%
B 7643 6579 212 212 2.77% 3.22%
C 7643 6579 7 7 0.09% 0.11%
D 7643 6579 198 198 2.59% 3.01%

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 3 245 42567 222.98 762 743 187.6
A 4 3 29436 152.98 762 743 187.6
A 13 248 22064 113.67 762 743 187.6
B 10 128 1627212 10277.07 737 710 158.3
B 4 201 202268 1273.55 737 710 158.3
B 0 63 77012 482.12 737 710 158.3
C 6 9 48102 234.94 742 735 201.6
C 12 252 24702 118.87 742 735 201.6
C 6 223 20566 98.36 742 735 201.6
D 8 160 525136 2580.85 723 690 203.2
D 8 240 325839 1600.09 723 690 203.2
D 6 239 141008 690.52 723 690 203.2

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