ASTROSAT CZTI

Data Quality Report

Orbit 47251

Creation date: 2024-06-27T23:33:25.304383
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/AS1C09_005T01_9000006304_47251cztM0_level2.fits modeM0/AS1C09_005T01_9000006304_47251cztM0_level2_quad_clean.evt
Size (bytes)1,052,694,720198,518,400
Size1003.9 MB 189.3 MB
Events in quadrant A15,374,3431,282,571
Events in quadrant B6,556,8701,355,049
Events in quadrant C5,642,8741,339,447
Events in quadrant D10,401,6401,145,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0548085
B0284872
C0264662
D0397192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1283811258.763047%
B128392972.313264%
C12839840.654257%
D1283910498.170418%

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 13813 12840 570 570 4.13% 4.44%
B 13814 12841 80 80 0.58% 0.62%
C 13814 12841 24 24 0.17% 0.19%
D 13814 12841 894 894 6.47% 6.96%

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 6860809 24026.21 1387 1356 285.5
A 9 191 3072576 10757.38 1387 1356 285.5
A 13 248 41176 139.48 1387 1356 285.5
B 0 200 410412 1495.19 1401 1356 273.6
B 0 190 118856 429.49 1401 1356 273.6
B 5 32 105499 380.67 1401 1356 273.6
C 14 254 150711 456.48 1391 1396 327.1
C 12 250 33380 97.78 1391 1396 327.1
C 0 207 19603 55.66 1391 1396 327.1
D 12 1 3969878 11705.33 1347 1302 339.0
D 1 47 376317 1106.11 1347 1302 339.0
D 12 233 184944 541.65 1347 1302 339.0

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