ASTROSAT CZTI

Data Quality Report

Orbit 11436

Creation date: 2024-06-27T16:13:05.277276
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/AS1G08_010T01_9000001672_11436cztM0_level2.evt modeM0/AS1G08_010T01_9000001672_11436cztM0_level2_quad_clean.evt
Size (bytes)202,288,32050,912,640
Size192.9 MB 48.6 MB
Events in quadrant A1,392,371349,082
Events in quadrant B1,838,588344,223
Events in quadrant C1,151,990338,877
Events in quadrant D1,563,639321,993

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060471
B072191
C053591
D064371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2617100.382117%
B26171475.617119%
C261740.152847%
D2617793.018724%

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 2617 2617 0 0 0.00% 0.00%
B 2617 2617 83 83 3.17% 3.17%
C 2617 2617 0 0 0.00% 0.00%
D 2617 2617 65 65 2.48% 2.48%

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 15 174 114357 1739.98 314 309 65.5
A 1 162 24652 371.39 314 309 65.5
A 1 178 14547 217.22 314 309 65.5
B 4 239 461685 7599.71 308 302 60.7
B 11 51 65586 1075.33 308 302 60.7
B 15 204 58831 964.07 308 302 60.7
C 13 61 2156 26.62 295 297 69.8
C 3 202 732 6.23 295 297 69.8
C -1 -1 -1 -1.0 295 297 69.8
D 1 52 188486 2632.02 292 285 71.5
D 13 104 108475 1513.06 292 285 71.5
D 14 34 68249 950.49 292 285 71.5

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