ASTROSAT CZTI

Data Quality Report

Orbit 44540

Creation date: 2024-06-27T23:03:57.153842
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/AS1A13_003T01_9000006002_44540cztM0_level2.fits modeM0/AS1A13_003T01_9000006002_44540cztM0_level2_quad_clean.evt
Size (bytes)926,331,840204,229,440
Size883.4 MB 194.8 MB
Events in quadrant A9,645,9611,367,550
Events in quadrant B8,062,3261,343,487
Events in quadrant C6,747,1391,355,062
Events in quadrant D8,823,7731,215,184

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0398214
B0331344
C0290802
D0353522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130563292.519914%
B130577695.889561%
C130581831.401440%
D130586735.153929%

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 14062 13058 114 114 0.81% 0.87%
B 14063 13059 491 491 3.49% 3.76%
C 14063 13060 86 86 0.61% 0.66%
D 14063 13060 515 515 3.66% 3.94%

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 10 83 3406878 11399.87 1451 1419 298.7
A 13 248 547484 1827.97 1451 1419 298.7
A 9 191 45813 148.61 1451 1419 298.7
B 5 235 1892371 6756.88 1415 1371 279.9
B 0 168 160166 567.4 1415 1371 279.9
B 5 255 113410 400.34 1415 1371 279.9
C 14 254 523161 1555.38 1425 1433 335.4
C 3 233 397876 1181.88 1425 1433 335.4
C 2 14 215168 637.19 1425 1433 335.4
D 2 249 1205652 3390.62 1411 1365 355.2
D 1 52 1005699 2827.66 1411 1365 355.2
D 4 232 292628 820.04 1411 1365 355.2

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