ASTROSAT CZTI

Data Quality Report

Orbit 40249

Creation date: 2024-06-27T22:14:09.597109
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_022T01_9000005536_40249cztM0_level2.fits modeM0/AS1A12_022T01_9000005536_40249cztM0_level2_quad_clean.evt
Size (bytes)165,640,32043,816,320
Size158.0 MB 41.8 MB
Events in quadrant A1,757,947285,701
Events in quadrant B1,236,233300,252
Events in quadrant C1,342,141289,868
Events in quadrant D1,587,457261,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067622
B053861
C055231
D065341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2641823.104885%
B264150.189322%
C264180.302916%
D2641712.688376%

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 3954 2642 47 47 1.19% 1.78%
B 3954 2642 1 1 0.03% 0.04%
C 3954 2642 8 8 0.20% 0.30%
D 3954 2642 55 55 1.39% 2.08%

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 13 248 335602 5287.49 295 289 63.4
A 10 83 251332 3958.65 295 289 63.4
A 2 79 8738 133.23 295 289 63.4
B 5 255 17570 284.2 302 293 60.8
B 0 230 9057 144.17 302 293 60.8
B 5 32 8424 133.75 302 293 60.8
C 15 214 114107 1592.56 297 298 71.5
C 9 54 26863 371.73 297 298 71.5
C 9 187 15716 215.75 297 298 71.5
D 12 217 105029 1451.8 291 283 72.1
D 12 227 97194 1343.2 291 283 72.1
D 9 19 78937 1090.16 291 283 72.1

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