ASTROSAT CZTI

Data Quality Report

Orbit 52522

Creation date: 2025-06-14T03:06:32.522745
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/AS1C09_011T06_9000006478_52522cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52522cztM0_level2_quad_clean.evt
Size (bytes)617,941,44092,119,680
Size589.3 MB 87.9 MB
Events in quadrant A3,709,263648,425
Events in quadrant B3,777,044649,554
Events in quadrant C6,896,570542,954
Events in quadrant D8,005,326510,015

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157481
B0155941
C0248382
D0281641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62751812.884462%
B62762293.648821%
C627597415.521912%
D6275124219.792829%

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 7250 6276 146 146 2.01% 2.33%
B 7251 6277 168 168 2.32% 2.68%
C 7250 6276 936 936 12.91% 14.91%
D 7250 6276 1266 1266 17.46% 20.17%

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 3 45 391679 2288.92 670 654 170.8
A 5 243 243157 1419.53 670 654 170.8
A 3 14 109013 634.29 670 654 170.8
B 4 81 384931 2752.7 652 631 139.6
B 12 32 196245 1401.16 652 631 139.6
B 1 255 147310 1050.65 652 631 139.6
C 4 5 1236724 7051.56 618 611 175.3
C 13 3 787828 4490.78 618 611 175.3
C 15 233 547290 3118.6 618 611 175.3
D 15 93 2016510 11223.7 609 579 179.6
D 6 42 1144539 6369.0 609 579 179.6
D 8 176 440671 2450.21 609 579 179.6

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