ASTROSAT CZTI

Data Quality Report

Orbit 39672

Creation date: 2024-06-27T22:07:34.039365
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/AS1A12_051T01_9000005490_39672cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39672cztM0_level2_quad_clean.evt
Size (bytes)1,560,479,040239,215,680
Size1.5 GB 228.1 MB
Events in quadrant A24,547,2221,264,525
Events in quadrant B8,134,4821,760,367
Events in quadrant C15,622,9371,541,935
Events in quadrant D8,213,3371,561,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840455
B0351484
C0574284
D0356064

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16145503531.186126%
B161452321.436977%
C16145170210.541963%
D16145910.563642%

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 21577 16149 4306 4306 19.96% 26.66%
B 21577 16149 147 147 0.68% 0.91%
C 21577 16149 1522 1522 7.05% 9.42%
D 21577 16149 68 68 0.32% 0.42%

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 15 222 15295293 46586.8 1621 1586 328.3
A 15 174 1474966 4488.12 1621 1586 328.3
A 10 83 1130512 3438.87 1621 1586 328.3
B 5 172 827879 2477.53 1753 1701 333.5
B 5 255 166404 493.91 1753 1701 333.5
B 4 200 56977 165.76 1753 1701 333.5
C 15 208 5807647 14929.41 1668 1677 388.9
C 9 187 2362396 6070.33 1668 1677 388.9
C 15 214 697384 1788.93 1668 1677 388.9
D 13 174 546034 1293.81 1729 1678 420.7
D 2 250 264514 624.7 1729 1678 420.7
D 12 227 232888 549.53 1729 1678 420.7

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