ASTROSAT CZTI

Data Quality Report

Orbit 33274

Creation date: 2024-06-27T20:46:56.580769
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/AS1T04_072T01_9000004780_33274cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33274cztM0_level2_quad_clean.evt
Size (bytes)536,967,36054,509,760
Size512.1 MB 52.0 MB
Events in quadrant A2,934,103327,450
Events in quadrant B3,752,602323,474
Events in quadrant C3,469,881316,902
Events in quadrant D5,720,666284,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121713
B0147172
C0137362
D0211002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5682170.299190%
B56822584.540655%
C5682821.443154%
D56825569.785287%

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 7385 5683 11 11 0.15% 0.19%
B 7385 5683 168 168 2.27% 2.96%
C 7385 5683 64 64 0.87% 1.13%
D 7385 5683 460 460 6.23% 8.09%

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 15 169 246312 1791.62 682 667 137.1
A 15 17 43608 313.19 682 667 137.1
A 13 254 10191 69.46 682 667 137.1
B 5 172 839569 6573.08 670 656 127.6
B 5 200 139896 1090.98 670 656 127.6
B 0 219 43967 339.35 670 656 127.6
C 10 49 436396 2880.1 656 661 151.3
C 15 214 243097 1602.44 656 661 151.3
C 0 10 126924 834.57 656 661 151.3
D 8 195 967409 6222.82 635 616 155.4
D 12 218 438800 2820.4 635 616 155.4
D 2 249 433811 2788.29 635 616 155.4

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