ASTROSAT CZTI

Data Quality Report

Orbit 58197

Creation date: 2026-07-01T00:10:14.838580
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_58197cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58197cztM0_level2_quad_clean.evt
Size (bytes)543,240,000109,667,520
Size518.1 MB 104.6 MB
Events in quadrant A3,414,344737,895
Events in quadrant B6,764,134723,214
Events in quadrant C3,382,170701,849
Events in quadrant D5,959,674630,141

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01522
C01520
D01522

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580059
B02543873
C01587465
D02307892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7588140.184502%
B758881510.740643%
C7586130.171368%
D75833925.169458%

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 7601 7593 1 1 0.01% 0.01%
B 7592 7592 611 611 8.05% 8.05%
C 7592 7591 6 6 0.08% 0.08%
D 7598 7595 406 406 5.34% 5.35%

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 4 3 57781 269.19 851 828 211.6
A 3 245 35464 163.71 851 828 211.6
A 13 248 21516 97.78 851 828 211.6
B 2 249 1960720 11270.86 806 774 173.9
B 10 128 1017370 5846.03 806 774 173.9
B 0 153 157895 903.54 806 774 173.9
C 12 254 48942 213.03 822 813 225.9
C 11 244 41140 178.5 822 813 225.9
C 12 252 30202 130.08 822 813 225.9
D 8 160 1692328 7477.3 804 771 226.2
D 6 239 365978 1614.35 804 771 226.2
D 8 240 127270 559.17 804 771 226.2

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