ASTROSAT CZTI

Data Quality Report

Orbit 54152

Creation date: 2025-10-01T19:04:21.514633
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_012T01_9000006512_54152cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54152cztM0_level2_quad_clean.evt
Size (bytes)414,138,24090,889,920
Size395.0 MB 86.7 MB
Events in quadrant A3,747,229591,914
Events in quadrant B3,624,928635,374
Events in quadrant C2,617,670577,062
Events in quadrant D4,861,923518,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154022
B0150702
C0125472
D0187332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61492453.984388%
B61492453.984388%
C6149300.487884%
D61503325.398374%

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 7279 6150 195 195 2.68% 3.17%
B 7279 6150 181 181 2.49% 2.94%
C 7279 6150 2 2 0.03% 0.03%
D 7280 6151 357 357 4.90% 5.80%

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 15 174 409612 2583.93 645 631 158.3
A 0 8 371566 2343.56 645 631 158.3
A 7 29 161409 1015.79 645 631 158.3
B 5 185 329851 2402.34 635 614 137.0
B 4 171 222463 1618.76 635 614 137.0
B 10 245 206807 1504.52 635 614 137.0
C 1 16 30381 169.75 631 624 175.3
C 3 242 20780 114.98 631 624 175.3
C 1 241 16829 92.44 631 624 175.3
D 7 70 844253 4762.56 621 593 177.1
D 10 181 662377 3735.85 621 593 177.1
D 8 176 518058 2921.15 621 593 177.1

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