ASTROSAT CZTI

Data Quality Report

Orbit 55189

Creation date: 2025-12-10T17:44:20.536691
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_022T16_9000006532_55189cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55189cztM0_level2_quad_clean.evt
Size (bytes)572,241,600115,871,040
Size545.7 MB 110.5 MB
Events in quadrant A5,839,590735,789
Events in quadrant B5,249,432764,496
Events in quadrant C4,267,774735,398
Events in quadrant D5,171,239687,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232600
B0220470
C0189440
D0215920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84206387.577197%
B842087210.356295%
C84201842.185273%
D84192923.468345%

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 8420 8420 331 331 3.93% 3.93%
B 8420 8420 465 465 5.52% 5.52%
C 8420 8420 82 82 0.97% 0.97%
D 8419 8419 182 182 2.16% 2.16%

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 78 1307418 5881.29 898 875 222.2
A 0 8 503095 2260.7 898 875 222.2
A 4 249 364183 1635.4 898 875 222.2
B 5 185 1600221 8468.76 871 839 188.9
B 10 247 93204 489.07 871 839 188.9
B 2 249 67681 353.93 871 839 188.9
C 13 3 212382 877.25 880 873 241.1
C 1 16 196144 809.9 880 873 241.1
C 10 22 168988 697.27 880 873 241.1
D 11 129 885013 3584.44 880 843 246.7
D 2 249 457688 1852.06 880 843 246.7
D 11 176 94693 380.47 880 843 246.7

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