ASTROSAT CZTI

Data Quality Report

Orbit 00230

Creation date: 2024-06-27T13:58:10.797265
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/AS1P01_123T01_9000000024_00230cztM0_level2.evt modeM0/AS1P01_123T01_9000000024_00230cztM0_level2_quad_clean.evt
Size (bytes)870,647,04079,205,760
Size830.3 MB 75.5 MB
Events in quadrant A6,118,143519,140
Events in quadrant B6,430,198519,571
Events in quadrant C5,796,742521,340
Events in quadrant D7,683,200479,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218032
B0227111
C0208561
D0264891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511430.058662%
B5114250.488854%
C511440.078217%
D51143116.081345%

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 6819 5115 112 112 1.64% 2.19%
B 6819 5115 170 170 2.49% 3.32%
C 6819 5115 56 56 0.82% 1.09%
D 6819 5115 846 846 12.41% 16.54%

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 12 150 37740 105.93 1547 1529 341.8
A 15 250 36718 102.94 1547 1529 341.8
A 12 250 30691 85.31 1547 1529 341.8
B 7 220 236318 649.13 1554 1557 361.7
B 5 46 121245 330.95 1554 1557 361.7
B 8 6 45612 121.82 1554 1557 361.7
C 1 1 68073 165.34 1450 1505 402.6
C 9 54 22563 52.3 1450 1505 402.6
C 12 3 5907 10.93 1450 1505 402.6
D 1 4 1378035 2811.77 1441 1439 489.6
D 13 46 150522 304.51 1441 1439 489.6
D 2 106 65549 130.95 1441 1439 489.6

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