ASTROSAT CZTI

Data Quality Report

Orbit 13354

Creation date: 2024-06-27T16:39:34.857067
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/AS1G08_082T01_9000001986_13354cztM0_level2.evt modeM0/AS1G08_082T01_9000001986_13354cztM0_level2_quad_clean.evt
Size (bytes)953,593,920177,096,960
Size909.4 MB 168.9 MB
Events in quadrant A6,597,0781,100,274
Events in quadrant B6,994,1841,120,488
Events in quadrant C6,740,5901,100,343
Events in quadrant D7,576,0201,051,436

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293102
B0300352
C0297492
D0325602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143491661.156875%
B143492091.456547%
C143491681.170813%
D143492771.930448%

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 15581 14353 4 4 0.03% 0.03%
B 15581 14353 30 30 0.19% 0.21%
C 15581 14353 30 30 0.19% 0.21%
D 15581 14353 124 124 0.80% 0.86%

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 9 143 39634 110.75 1679 1640 343.1
A 1 162 33069 91.62 1679 1640 343.1
A 5 98 23139 62.67 1679 1640 343.1
B 0 230 145741 448.4 1684 1636 321.4
B 3 64 100670 308.16 1684 1636 321.4
B 4 142 77062 234.7 1684 1636 321.4
C 14 220 192285 498.36 1642 1647 382.5
C 3 233 130624 337.17 1642 1647 382.5
C 15 208 13592 31.23 1642 1647 382.5
D 5 222 662007 1675.86 1624 1575 394.1
D 13 249 305762 771.88 1624 1575 394.1
D 1 52 215529 542.91 1624 1575 394.1

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