ASTROSAT CZTI

Data Quality Report

Orbit 46477

Creation date: 2024-06-27T23:23:38.644529
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/AS1A13_037T05_9000006216_46477cztM0_level2.fits modeM0/AS1A13_037T05_9000006216_46477cztM0_level2_quad_clean.evt
Size (bytes)152,994,24030,263,040
Size145.9 MB 28.9 MB
Events in quadrant A2,105,060189,491
Events in quadrant B1,010,978204,954
Events in quadrant C881,678206,504
Events in quadrant D1,517,807178,666

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075231
B042121
C039151
D058262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18741688.964781%
B1874874.642476%
C1874120.640342%
D18731337.100908%

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 1874 1874 18 18 0.96% 0.96%
B 1874 1874 14 14 0.75% 0.75%
C 1874 1874 0 0 0.00% 0.00%
D 1873 1873 90 90 4.81% 4.81%

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 1001765 20987.94 222 217 47.7
A 15 235 145444 3043.3 222 217 47.7
A 2 79 84873 1774.01 222 217 47.7
B 5 32 92345 1950.84 223 216 47.2
B 0 190 17974 376.03 223 216 47.2
B 0 245 6928 142.13 223 216 47.2
C 3 233 3145 53.58 224 226 54.5
C 12 249 2195 36.15 224 226 54.5
C 13 61 1408 21.7 224 226 54.5
D 1 52 263239 4522.83 221 214 58.2
D 2 249 172994 2971.03 221 214 58.2
D 13 249 119667 2054.05 221 214 58.2

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