ASTROSAT CZTI

Data Quality Report

Orbit 45793

Creation date: 2024-06-27T23:16:15.178176
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_088T01_9000006126_45793cztM0_level2.fits modeM0/AS1T05_088T01_9000006126_45793cztM0_level2_quad_clean.evt
Size (bytes)621,777,600102,516,480
Size593.0 MB 97.8 MB
Events in quadrant A5,541,092713,414
Events in quadrant B5,851,270712,522
Events in quadrant C4,160,088668,716
Events in quadrant D7,003,650593,894

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02015522
B02175024
C01618614
D02498412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59521843.091398%
B59525028.434140%
C59525499.223790%
D595485414.343299%

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 7398 5954 18 18 0.24% 0.30%
B 7399 5955 288 288 3.89% 4.84%
C 7399 5954 389 389 5.26% 6.53%
D 7399 5956 812 812 10.97% 13.63%

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 2677257 18462.09 710 696 145.0
A 13 248 77031 526.54 710 696 145.0
A 2 79 12219 79.48 710 696 145.0
B 3 112 2604244 19538.0 698 676 133.3
B 15 201 168311 1257.99 698 676 133.3
B 4 171 82031 610.51 698 676 133.3
C 9 54 1350314 8458.94 682 687 159.6
C 14 254 86250 536.28 682 687 159.6
C 12 2 32157 197.24 682 687 159.6
D 11 241 3646305 21090.25 683 663 172.9
D 1 52 173355 999.03 683 663 172.9
D 8 48 155782 897.37 683 663 172.9

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