ASTROSAT CZTI

Data Quality Report

Orbit 54397

Creation date: 2025-10-18T06:44:32.135073
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_126T19_9000006518_54397cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54397cztM0_level2_quad_clean.evt
Size (bytes)719,352,00080,723,520
Size686.0 MB 77.0 MB
Events in quadrant A2,854,116603,697
Events in quadrant B2,884,206646,642
Events in quadrant C7,952,841419,458
Events in quadrant D12,441,051327,875

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134091
B0135121
C0280182
D0414011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6396350.547217%
B6397430.672190%
C6396194130.347092%
D6396288845.153221%

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 7391 6397 15 15 0.20% 0.23%
B 7392 6398 11 11 0.15% 0.17%
C 7390 6396 1841 1841 24.91% 28.78%
D 7391 6397 2934 2934 39.70% 45.87%

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 12 15 103259 616.26 671 654 166.5
A 0 8 43611 258.01 671 654 166.5
A 8 246 27806 163.08 671 654 166.5
B 10 14 79656 550.49 666 640 143.5
B 10 247 33150 226.49 666 640 143.5
B 4 81 24824 168.49 666 640 143.5
C 1 241 4455753 29001.3 558 551 153.6
C 1 16 457124 2972.08 558 551 153.6
C 14 254 260152 1689.88 558 551 153.6
D 8 176 7288508 47158.79 530 504 154.5
D 2 172 1336554 8645.23 530 504 154.5
D 2 62 1260700 8154.4 530 504 154.5

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