ASTROSAT CZTI

Data Quality Report

Orbit 39101

Creation date: 2024-06-27T22:00:25.762425
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_067T01_9000005432_39101cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39101cztM0_level2_quad_clean.evt
Size (bytes)357,719,04089,300,160
Size341.1 MB 85.2 MB
Events in quadrant A2,917,346614,895
Events in quadrant B2,527,719627,272
Events in quadrant C3,548,048580,524
Events in quadrant D3,852,914525,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118512
B0108691
C0139111
D0148811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5084290.570417%
B5084200.393391%
C5084320.629426%
D50842705.310779%

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 7175 5085 19 19 0.26% 0.37%
B 7175 5085 5 5 0.07% 0.10%
C 7175 5085 41 41 0.57% 0.81%
D 7175 5085 285 285 3.97% 5.60%

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 367966 3154.81 575 566 116.5
A 12 16 164767 1409.97 575 566 116.5
A 7 3 81402 694.13 575 566 116.5
B 5 184 151030 1352.17 573 559 111.3
B 5 172 56010 498.3 573 559 111.3
B 15 32 32081 283.27 573 559 111.3
C 15 208 1041731 8144.01 549 555 127.8
C 15 214 214858 1676.26 549 555 127.8
C 9 187 141683 1103.89 549 555 127.8
D 5 222 770496 5802.67 541 526 132.7
D 2 249 485933 3658.14 541 526 132.7
D 12 233 223100 1677.37 541 526 132.7

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