ASTROSAT CZTI

Data Quality Report

Orbit 58630

Creation date: 2026-07-30T02:25:47.895489
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_004T06_9000006594_58630cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58630cztM0_level2_quad_clean.evt
Size (bytes)535,769,28090,959,040
Size510.9 MB 86.7 MB
Events in quadrant A2,916,218623,206
Events in quadrant B4,579,235624,814
Events in quadrant C6,012,472553,437
Events in quadrant D5,838,439515,390

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131581
B0179981
C0222601
D0216661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6263560.894140%
B62635218.318697%
C626373311.703656%
D626375011.975092%

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 7368 6264 6 6 0.08% 0.10%
B 7368 6264 301 301 4.09% 4.81%
C 7367 6263 547 547 7.43% 8.73%
D 7368 6264 599 599 8.13% 9.56%

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 10 251 118564 686.13 692 673 171.8
A 10 17 59330 341.39 692 673 171.8
A 13 254 10659 58.12 692 673 171.8
B 4 171 1368165 9612.75 663 640 142.3
B 8 128 180456 1263.98 663 640 142.3
B 6 255 116444 814.02 663 640 142.3
C 15 217 1304809 7330.3 647 638 177.9
C 12 254 801648 4502.2 647 638 177.9
C 13 3 779448 4377.42 647 638 177.9
D 8 240 1412170 7827.25 639 612 180.3
D 2 249 1074400 5954.28 639 612 180.3
D 12 128 324415 1795.52 639 612 180.3

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