ASTROSAT CZTI

Data Quality Report

Orbit 20220122_A11_047T15_9000004882_level2

Creation date: 2025-12-31T13:37:11.323932
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/AS1A11_047T15_9000004882cztM0_level2.fits modeM0/AS1A11_047T15_9000004882cztM0_level2_quad_clean.evt
Size (bytes)1,361,079,3601,428,333,120
Size1.3 GB 1.3 GB
Events in quadrant A8,550,9709,034,170
Events in quadrant B7,748,7248,572,326
Events in quadrant C8,171,9368,388,029
Events in quadrant D6,945,8887,473,046

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029220
B029220
C029220
D029220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05510
B05510
C05510
D05510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02943690
B04652750
C03821390
D04684840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1429114930.344970%
B1429111679911.754868%
C14291161464.300579%
D14291181135.676960%

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 197972 142912 0 0 0.00% 0.00%
B 197972 142890 0 0 0.00% 0.00%
C 197972 142837 0 0 0.00% 0.00%
D 197971 142759 0 0 0.00% 0.00%

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 9 19 7033 9.04 2230 2093 546.2
A 7 110 6897 8.8 2230 2093 546.2
A 0 29 6851 8.71 2230 2093 546.2
B 2 9 6834 12.23 2056 1966 398.0
B 3 80 6102 10.39 2056 1966 398.0
B 2 8 5528 8.95 2056 1966 398.0
C 1 81 6982 9.07 2161 2029 545.9
C 1 80 6696 8.55 2161 2029 545.9
C 3 202 6383 7.98 2161 2029 545.9
D 7 3 5164 6.37 1991 1822 524.5
D 10 113 5054 6.16 1991 1822 524.5
D 4 160 5030 6.12 1991 1822 524.5

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