ASTROSAT CZTI

Data Quality Report

Orbit 53003

Creation date: 2025-07-16T13:13:13.740042
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/AS1A13_003T01_9000006486_53003cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_53003cztM0_level2_quad_clean.evt
Size (bytes)628,565,76039,605,760
Size599.4 MB 37.8 MB
Events in quadrant A9,119,99451,474
Events in quadrant B2,691,060382,603
Events in quadrant C5,781,349243,394
Events in quadrant D5,382,176254,103

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296682
B0106082
C0197762
D0186762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3783332787.946075%
B3783541.427439%
C3783132735.077980%
D378396425.482421%

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 3797 3782 2963 2963 78.04% 78.34%
B 3798 3784 35 35 0.92% 0.92%
C 3798 3784 1098 1098 28.91% 29.02%
D 3798 3784 830 830 21.85% 21.93%

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 9 191 7299913 138000.51 205 201 52.9
A 15 190 831493 15715.51 205 201 52.9
A 7 206 89311 1684.62 205 201 52.9
B 10 254 971673 11842.28 374 361 82.0
B 4 81 56303 682.05 374 361 82.0
B 5 172 53643 649.62 374 361 82.0
C 15 224 2460713 28457.37 308 306 86.5
C 12 254 1040877 12035.37 308 306 86.5
C 7 80 721088 8336.65 308 306 86.5
D 2 62 3097230 32179.94 330 314 96.2
D 15 78 335207 3479.86 330 314 96.2
D 8 176 205003 2126.92 330 314 96.2

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