ASTROSAT CZTI

Data Quality Report

Orbit 54966

Creation date: 2025-11-25T14:16:20.912941
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_014T01_9000006528_54966cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54966cztM0_level2_quad_clean.evt
Size (bytes)653,955,84072,463,680
Size623.7 MB 69.1 MB
Events in quadrant A3,132,342566,692
Events in quadrant B2,712,193623,508
Events in quadrant C3,644,722542,397
Events in quadrant D14,257,38848,534

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136361
B0124351
C0150721
D0464571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59121813.061570%
B5912861.454668%
C59122133.602842%
D5912543091.847091%

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 7012 5913 82 82 1.17% 1.39%
B 7012 5913 0 0 0.00% 0.00%
C 7012 5913 132 132 1.88% 2.23%
D 7012 5913 5085 5085 72.52% 86.00%

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 15 32 506697 3202.79 639 621 158.0
A 0 8 92339 580.45 639 621 158.0
A 4 3 36518 227.18 639 621 158.0
B 5 172 134583 984.87 636 614 136.0
B 5 185 24661 176.78 636 614 136.0
B 12 111 16528 116.99 636 614 136.0
C 4 5 797399 4692.33 620 613 169.8
C 12 252 115874 678.78 620 613 169.8
C 6 223 110127 644.94 620 613 169.8
D 15 94 13269878 241968.49 188 179 54.8
D 3 12 66165 1203.23 188 179 54.8
D 3 224 59075 1073.95 188 179 54.8

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