ASTROSAT CZTI

Data Quality Report

Orbit 40821

Creation date: 2024-06-27T22:20:57.331820
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_104T02_9000005572_40821cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40821cztM0_level2_quad_clean.evt
Size (bytes)205,444,80054,276,480
Size195.9 MB 51.8 MB
Events in quadrant A1,824,287368,107
Events in quadrant B1,453,321379,911
Events in quadrant C1,554,103358,276
Events in quadrant D2,527,717314,577

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073082
B063581
C064921
D096951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3133140.446856%
B3133110.351101%
C3133160.510693%
D31332026.447494%

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 5075 3134 9 9 0.18% 0.29%
B 5075 3134 1 1 0.02% 0.03%
C 5075 3134 17 17 0.33% 0.54%
D 5075 3134 229 229 4.51% 7.31%

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 278794 3714.45 360 353 75.0
A 13 248 50678 671.34 360 353 75.0
A 15 191 42890 567.45 360 353 75.0
B 0 190 24025 336.8 360 351 70.3
B 12 111 8956 122.42 360 351 70.3
B 11 111 8141 110.83 360 351 70.3
C 15 214 132118 1594.5 349 351 82.6
C 0 10 53152 638.94 349 351 82.6
C 13 61 2338 24.04 349 351 82.6
D 12 79 321695 3795.39 338 329 84.7
D 1 47 309604 3652.59 338 329 84.7
D 13 249 218838 2580.63 338 329 84.7

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