ASTROSAT CZTI

Data Quality Report

Orbit 42628

Creation date: 2024-06-27T22:42:23.538197
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_174T01_9000005820_42628cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42628cztM0_level2_quad_clean.evt
Size (bytes)954,570,240256,700,160
Size910.3 MB 244.8 MB
Events in quadrant A8,542,6441,718,983
Events in quadrant B7,249,0681,764,497
Events in quadrant C7,769,5811,687,079
Events in quadrant D10,536,8491,500,435

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352154
B0325684
C0332894
D0429297

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15960460.288221%
B15961310.194223%
C15961500.313264%
D159608235.156642%

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 21598 15964 24 24 0.11% 0.15%
B 21599 15965 6 6 0.03% 0.04%
C 21599 15965 26 26 0.12% 0.16%
D 21598 15964 690 690 3.19% 4.32%

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 1424893 3949.6 1754 1713 360.3
A 2 79 238253 656.44 1754 1713 360.3
A 7 3 105486 287.99 1754 1713 360.3
B 0 245 259844 762.85 1743 1697 338.4
B 0 168 53395 152.77 1743 1697 338.4
B 7 202 51386 146.84 1743 1697 338.4
C 15 214 654197 1618.79 1725 1735 403.1
C 14 254 301252 743.12 1725 1735 403.1
C 0 239 58771 141.51 1725 1735 403.1
D 13 249 1479399 3592.56 1681 1631 411.3
D 1 52 733004 1778.02 1681 1631 411.3
D 12 6 566655 1373.61 1681 1631 411.3

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