ASTROSAT CZTI

Data Quality Report

Orbit 54562

Creation date: 2025-10-29T10:08:09.973736
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_127T09_9000006520_54562cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54562cztM0_level2_quad_clean.evt
Size (bytes)597,735,360102,545,280
Size570.0 MB 97.8 MB
Events in quadrant A4,004,121713,760
Events in quadrant B3,837,681771,606
Events in quadrant C9,576,499459,096
Events in quadrant D4,125,385639,114

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173552
B0171502
C0338602
D0179122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74921732.309130%
B74911111.481778%
C7491262835.082099%
D74921331.775227%

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 9413 7494 104 104 1.10% 1.39%
B 9412 7493 24 24 0.25% 0.32%
C 9412 7493 2687 2687 28.55% 35.86%
D 9413 7494 93 93 0.99% 1.24%

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 11 3 433219 2152.49 811 789 200.9
A 3 14 299176 1485.27 811 789 200.9
A 4 3 42932 209.77 811 789 200.9
B 0 213 224014 1274.25 811 783 175.2
B 5 172 87443 494.67 811 783 175.2
B 2 249 81093 458.43 811 783 175.2
C 9 38 6230194 32358.45 695 690 192.5
C 3 248 214494 1110.58 695 690 192.5
C 12 254 132371 684.0 695 690 192.5
D 15 94 207201 918.44 784 749 224.8
D 3 12 158674 702.56 784 749 224.8
D 9 102 133757 591.71 784 749 224.8

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