ASTROSAT CZTI

Data Quality Report

Orbit 38886

Creation date: 2024-06-27T21:57:45.344131
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/AS1T05_058T01_9000005414_38886cztM0_level2.fits modeM0/AS1T05_058T01_9000005414_38886cztM0_level2_quad_clean.evt
Size (bytes)295,292,16068,837,760
Size281.6 MB 65.6 MB
Events in quadrant A2,434,334473,937
Events in quadrant B1,963,610482,154
Events in quadrant C1,991,012467,231
Events in quadrant D4,214,383365,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099002
B086281
C084441
D0154591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4194120.286123%
B4194250.596090%
C419410.023844%
D419468716.380544%

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 5656 4195 5 5 0.09% 0.12%
B 5656 4195 15 15 0.27% 0.36%
C 5656 4195 0 0 0.00% 0.00%
D 5656 4195 660 660 11.67% 15.73%

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 299205 3065.83 477 466 97.4
A 0 247 201065 2058.66 477 466 97.4
A 13 248 65527 667.69 477 466 97.4
B 5 172 61479 661.34 471 457 92.3
B 0 230 19088 201.92 471 457 92.3
B 0 186 16942 178.66 471 457 92.3
C 15 214 171127 1565.49 464 466 109.0
C 13 61 3247 25.51 464 466 109.0
C 3 233 3087 24.04 464 466 109.0
D 12 227 1360100 12957.86 427 413 104.9
D 1 52 388448 3697.99 427 413 104.9
D 2 250 262145 2494.31 427 413 104.9

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