ASTROSAT CZTI

Data Quality Report

Orbit 37257

Creation date: 2024-06-27T21:37:30.714693
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_087T01_9000005292_37257cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37257cztM0_level2_quad_clean.evt
Size (bytes)16,868,1605,356,800
Size16.1 MB 5.1 MB
Events in quadrant A126,41433,849
Events in quadrant B117,83234,522
Events in quadrant C136,83335,179
Events in quadrant D107,78531,128

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B082
C071
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0794269
B0782258
C0851272
D0821307

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26200.000000%
B26000.000000%
C27400.000000%
D25010.400000%

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 374 299 0 0 0.00% 0.00%
B 347 300 0 0 0.00% 0.00%
C 368 313 0 0 0.00% 0.00%
D 374 296 1 1 0.27% 0.34%

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 8058 1011.46 29 28 7.9
A 13 6 4532 567.32 29 28 7.9
A 13 248 424 49.88 29 28 7.9
B 0 230 1754 226.29 28 28 7.6
B 0 213 1524 196.14 28 28 7.6
B 5 255 1489 191.55 28 28 7.6
C 15 214 11376 1302.94 29 29 8.7
C 14 254 7150 817.68 29 29 8.7
C 3 233 3672 418.32 29 29 8.7
D 1 52 4961 606.61 26 25 8.1
D 2 250 1489 179.92 26 25 8.1
D 2 234 1134 136.29 26 25 8.1

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