ASTROSAT CZTI

Data Quality Report

Orbit 45892

Creation date: 2024-06-27T23:17:23.276151
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_188T01_9000006138_45892cztM0_level2.fits modeM0/AS1T05_188T01_9000006138_45892cztM0_level2_quad_clean.evt
Size (bytes)603,601,920100,866,240
Size575.6 MB 96.2 MB
Events in quadrant A5,809,685712,846
Events in quadrant B8,571,303528,751
Events in quadrant C2,924,412724,005
Events in quadrant D4,533,235634,304

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217572
B0300232
C0133122
D0180022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65091862.857582%
B6509221434.014442%
C6509230.353357%
D65092764.240283%

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 7554 6510 44 44 0.58% 0.68%
B 7554 6509 1426 1426 18.88% 21.91%
C 7554 6510 4 4 0.05% 0.06%
D 7554 6510 235 235 3.11% 3.61%

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 2951112 19357.12 732 717 152.4
A 13 254 9038 54.59 732 717 152.4
A 3 137 8331 49.95 732 717 152.4
B 3 112 4709497 38638.63 625 606 121.9
B 4 171 1314320 10779.63 625 606 121.9
B 0 183 29158 234.28 625 606 121.9
C 12 2 44348 251.31 735 740 173.5
C 3 233 9588 50.99 735 740 173.5
C 13 61 4878 23.85 735 740 173.5
D 1 52 746612 4217.04 711 690 176.9
D 12 2 462601 2611.4 711 690 176.9
D 12 233 175359 987.48 711 690 176.9

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