ASTROSAT CZTI

Data Quality Report

Orbit 40821

Creation date: 2024-06-27T22:20:56.437889
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/AS1A12_099T03_9000005570_40821cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40821cztM0_level2_quad_clean.evt
Size (bytes)94,717,44021,075,840
Size90.3 MB 20.1 MB
Events in quadrant A770,310144,727
Events in quadrant B581,292149,440
Events in quadrant C601,716139,911
Events in quadrant D1,456,861114,389

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030481
B025461
C025461
D051751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1194121.005025%
B1194121.005025%
C1194151.256281%
D119419216.080402%

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 1194 1194 8 8 0.67% 0.67%
B 1194 1194 4 4 0.34% 0.34%
C 1194 1194 16 16 1.34% 1.34%
D 1194 1194 209 209 17.50% 17.50%

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 177234 6104.95 133 131 29.0
A 6 10 31660 1086.84 133 131 29.0
A 2 79 24540 841.41 133 131 29.0
B 0 190 33484 1193.19 134 131 28.0
B 5 255 13449 476.45 134 131 28.0
B 0 230 6238 218.48 134 131 28.0
C 15 214 53927 1728.31 126 127 31.1
C 0 10 46924 1503.34 126 127 31.1
C 3 233 2398 72.96 126 127 31.1
D 1 47 609959 19872.0 118 114 30.7
D 12 79 202080 6581.13 118 114 30.7
D 12 233 74326 2418.22 118 114 30.7

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