ASTROSAT CZTI

Data Quality Report

Orbit 20220205_A05_085T01_9000004910_level2

Creation date: 2022-02-09T12:26:05.381356
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/AS1A05_085T01_9000004910cztM0_level2_bc.evt modeM0/AS1A05_085T01_9000004910cztM0_level2_quad_clean.evt
Size (bytes)9,132,946,5601,691,556,480
Size8.5 GB 1.6 GB
Events in quadrant A27,327,65311,517,762
Events in quadrant B40,919,35511,242,339
Events in quadrant C51,081,81011,261,272
Events in quadrant D148,705,8638,549,242

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025800
B025800
C025800
D025800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02597050
B03218230
C03307840
D06569700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1262594110.325521%
B12625962954.985783%
C12625945703.619544%
D1262594290333.980152%

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 172717 126276 25 25 0.01% 0.02%
B 172716 126257 324 324 0.19% 0.26%
C 172716 126260 1873 1873 1.08% 1.48%
D 172716 126253 26525 26525 15.36% 21.01%

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 9 143 564582 380.51 6665 6576 1466.5
A 10 83 503966 339.18 6665 6576 1466.5
A 13 6 272715 181.48 6665 6576 1466.5
B 5 172 11686043 8985.71 6578 6445 1299.8
B 0 190 906942 692.8 6578 6445 1299.8
B 5 255 824662 629.5 6578 6445 1299.8
C 4 254 17649793 12159.55 6381 6342 1451.0
C 15 214 4903980 3375.36 6381 6342 1451.0
C 14 67 1290927 885.31 6381 6342 1451.0
D 7 223 72136359 54446.21 5460 5294 1324.8
D 2 249 18483654 13947.9 5460 5294 1324.8
D 8 195 17293012 13049.17 5460 5294 1324.8

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