ASTROSAT CZTI

Data Quality Report

Orbit 11819

Creation date: 2024-06-27T16:18:41.563720
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/AS1A04_022T04_9000001746_11819cztM0_level2.evt modeM0/AS1A04_022T04_9000001746_11819cztM0_level2_quad_clean.evt
Size (bytes)1,153,442,880194,063,040
Size1.1 GB 185.1 MB
Events in quadrant A6,986,3181,237,232
Events in quadrant B11,757,8671,197,832
Events in quadrant C6,518,2971,253,884
Events in quadrant D8,689,0161,186,193

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304502
B0448212
C0296932
D0356242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145192511.728769%
B1451910327.107928%
C145191320.909154%
D145195163.553964%

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 15525 14522 5 5 0.03% 0.03%
B 15525 14522 581 581 3.74% 4.00%
C 15525 14522 3 3 0.02% 0.02%
D 15525 14522 272 272 1.75% 1.87%

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 1 162 195567 568.03 1687 1648 341.4
A 1 178 99743 287.34 1687 1648 341.4
A 1 161 87089 250.28 1687 1648 341.4
B 10 16 2923236 9363.29 1658 1616 312.0
B 4 239 1851014 5927.0 1658 1616 312.0
B 3 64 100384 316.53 1658 1616 312.0
C 8 208 48437 121.06 1652 1658 386.4
C 13 61 12456 27.94 1652 1658 386.4
C 0 207 11144 24.55 1652 1658 386.4
D 1 52 1000697 2519.04 1638 1587 396.6
D 13 122 390601 980.82 1638 1587 396.6
D 13 104 231012 578.45 1638 1587 396.6

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