ASTROSAT CZTI

Data Quality Report

Orbit 51410

Creation date: 2025-03-31T05:07:59.902955
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/AS1C07_001T03_9000006456_51410cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51410cztM0_level2_quad_clean.evt
Size (bytes)600,154,56096,796,800
Size572.4 MB 92.3 MB
Events in quadrant A7,179,397587,630
Events in quadrant B4,240,561694,000
Events in quadrant C6,187,219576,208
Events in quadrant D4,077,053595,584

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261452
B0173472
C0230252
D0171002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A685586412.603939%
B68553575.207877%
C685695913.987748%
D68562012.931739%

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 8860 6857 583 583 6.58% 8.50%
B 8860 6857 127 127 1.43% 1.85%
C 8861 6858 630 630 7.11% 9.19%
D 8861 6858 108 108 1.22% 1.57%

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 12 3 1657668 9622.56 698 680 172.2
A 4 175 1128103 6547.24 698 680 172.2
A 15 174 761734 4419.64 698 680 172.2
B 6 51 398778 2600.41 721 696 153.1
B 10 254 240662 1567.54 721 696 153.1
B 5 185 184948 1203.6 721 696 153.1
C 15 179 1261801 6663.8 688 681 189.2
C 4 12 1148844 6066.93 688 681 189.2
C 10 171 382770 2018.97 688 681 189.2
D 3 12 325528 1641.93 709 684 197.8
D 8 176 289967 1462.18 709 684 197.8
D 7 80 143679 722.77 709 684 197.8

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