ASTROSAT CZTI

Data Quality Report

Orbit 41468

Creation date: 2024-06-27T22:29:36.286840
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_110T01_9000005672_41468cztM0_level2.fits modeM0/AS1T05_110T01_9000005672_41468cztM0_level2_quad_clean.evt
Size (bytes)660,646,080176,117,760
Size630.0 MB 168.0 MB
Events in quadrant A5,861,2751,183,720
Events in quadrant B5,236,3451,215,160
Events in quadrant C6,053,9391,119,186
Events in quadrant D6,447,3151,050,492

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239674
B0230513
C0246433
D0266153

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11035490.444042%
B11035360.326235%
C110353403.081106%
D110352372.147712%

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 15094 11038 19 19 0.13% 0.17%
B 15094 11038 12 12 0.08% 0.11%
C 15094 11038 321 321 2.13% 2.91%
D 15094 11038 205 205 1.36% 1.86%

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 1021089 4098.56 1208 1182 248.8
A 2 79 93726 371.89 1208 1182 248.8
A 13 248 62185 245.14 1208 1182 248.8
B 0 190 188959 814.08 1200 1164 230.7
B 5 255 168901 727.13 1200 1164 230.7
B 0 245 74697 318.76 1200 1164 230.7
C 0 10 936713 3497.0 1157 1162 267.5
C 15 214 455835 1699.52 1157 1162 267.5
C 0 15 103378 382.07 1157 1162 267.5
D 13 249 635080 2217.18 1169 1134 285.9
D 5 222 402261 1402.91 1169 1134 285.9
D 1 47 317804 1107.53 1169 1134 285.9

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