ASTROSAT CZTI

Data Quality Report

Orbit 01833

Creation date: 2024-06-27T14:13:01.113688
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/AS1G02_021T08_9000000302_01833cztM0_level2.evt modeM0/AS1G02_021T08_9000000302_01833cztM0_level2_quad_clean.evt
Size (bytes)892,054,08069,246,720
Size850.7 MB 66.0 MB
Events in quadrant A6,521,999429,815
Events in quadrant B7,779,005426,508
Events in quadrant C6,366,599430,999
Events in quadrant D5,978,381419,795

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233472
B0271052
C02290723
D0217342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A557260.107681%
B55722534.540560%
C556860.107759%
D5572380.681981%

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 6552 5573 145 145 2.21% 2.60%
B 6552 5573 768 768 11.72% 13.78%
C 6552 5571 149 149 2.27% 2.67%
D 6552 5573 138 138 2.11% 2.48%

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 0 128 5725 9.79 1704 1716 409.5
A 10 2 4064 5.73 1704 1716 409.5
A -1 -1 -1 -1.0 1704 1716 409.5
B 0 187 855092 2089.94 1747 1756 408.3
B 8 3 259430 631.08 1747 1756 408.3
B 0 234 15199 32.92 1747 1756 408.3
C 9 236 36777 77.73 1616 1676 451.6
C 14 223 14935 29.36 1616 1676 451.6
C 9 54 12044 22.96 1616 1676 451.6
D 1 83 166738 343.43 1542 1594 480.9
D 13 88 16675 31.36 1542 1594 480.9
D 13 105 14915 27.7 1542 1594 480.9

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