ASTROSAT CZTI

Data Quality Report

Orbit 38904

Creation date: 2024-06-27T21:57:58.868046
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/AS1T05_064T01_9000005416_38904cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38904cztM0_level2_quad_clean.evt
Size (bytes)661,080,960178,032,960
Size630.5 MB 169.8 MB
Events in quadrant A5,574,8591,196,633
Events in quadrant B4,991,4081,220,149
Events in quadrant C5,471,8651,165,532
Events in quadrant D7,587,1211,053,038

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230363
B0223432
C0231192
D0297462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10904290.265957%
B10904650.596112%
C10904820.752018%
D109043713.402421%

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 13620 10906 7 7 0.05% 0.06%
B 13620 10906 28 28 0.21% 0.26%
C 13620 10906 59 59 0.43% 0.54%
D 13620 10906 382 382 2.80% 3.50%

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 758137 3105.54 1209 1187 243.7
A 13 248 44387 177.24 1209 1187 243.7
A 13 6 27991 109.97 1209 1187 243.7
B 5 172 141933 607.66 1197 1162 231.7
B 0 230 55893 236.26 1197 1162 231.7
B 0 213 30384 126.14 1197 1162 231.7
C 15 214 447301 1635.07 1174 1182 272.8
C 14 254 294921 1076.59 1174 1182 272.8
C 12 249 97358 352.5 1174 1182 272.8
D 12 235 1032402 3629.15 1169 1135 284.2
D 12 2 419758 1473.18 1169 1135 284.2
D 2 250 400926 1406.91 1169 1135 284.2

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