ASTROSAT CZTI

Data Quality Report

Orbit 27400

Creation date: 2024-06-27T19:39:42.271143
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/AS1T03_249T01_9000003934_27400cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27400cztM0_level2_quad_clean.evt
Size (bytes)825,428,160139,821,120
Size787.2 MB 133.3 MB
Events in quadrant A5,274,265901,701
Events in quadrant B5,415,481921,008
Events in quadrant C5,342,728866,338
Events in quadrant D8,272,718835,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215910
B0221300
C0219010
D0313950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10238740.722797%
B102391121.093857%
C102391561.523586%
D102397767.578865%

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 12728 10240 4 4 0.03% 0.04%
B 12729 10241 2 2 0.02% 0.02%
C 12729 10241 0 0 0.00% 0.00%
D 12729 10241 600 600 4.71% 5.86%

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 12 96 37540 134.56 1354 1329 269.1
A 13 254 17945 61.74 1354 1329 269.1
A 12 189 13210 44.15 1354 1329 269.1
B 0 230 73077 288.99 1338 1309 248.3
B 15 32 31359 121.0 1338 1309 248.3
B 12 111 30376 117.05 1338 1309 248.3
C 14 238 209399 700.37 1286 1300 297.1
C 2 16 113764 378.5 1286 1300 297.1
C 1 16 9161 26.46 1286 1300 297.1
D 1 52 3004279 10110.43 1268 1239 297.0
D 2 250 334378 1121.59 1268 1239 297.0
D 7 38 89007 295.49 1268 1239 297.0

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