ASTROSAT CZTI

Data Quality Report

Orbit 13078

Creation date: 2024-06-27T16:36:15.466335
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/AS1A04_176T02_9000001924_13078cztM0_level2.evt modeM0/AS1A04_176T02_9000001924_13078cztM0_level2_quad_clean.evt
Size (bytes)470,099,52045,331,200
Size448.3 MB 43.2 MB
Events in quadrant A2,291,039290,262
Events in quadrant B5,772,433202,938
Events in quadrant C2,036,956291,988
Events in quadrant D3,837,877278,073

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097671
B0201491
C091681
D0144161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A43911743.962651%
B4391208347.437941%
C43911192.710089%
D439161313.960373%

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 4637 4394 18 18 0.39% 0.41%
B 4637 4394 1342 1342 28.94% 30.54%
C 4637 4394 3 3 0.06% 0.07%
D 4637 4394 267 267 5.76% 6.08%

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 8 15 181227 1683.49 517 505 107.3
A 15 223 53859 497.01 517 505 107.3
A 15 239 25489 232.74 517 505 107.3
B 4 239 4237424 62451.72 343 334 67.8
B 0 85 149033 2191.72 343 334 67.8
B 3 64 16134 232.88 343 334 67.8
C 15 208 35961 297.43 509 511 119.2
C 14 234 12316 99.05 509 511 119.2
C 13 61 3779 27.42 509 511 119.2
D 1 52 1489008 12630.93 484 468 117.8
D 10 157 324870 2752.7 484 468 117.8
D 14 34 101453 856.9 484 468 117.8

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