ASTROSAT CZTI

Data Quality Report

Orbit 04525

Creation date: 2024-06-27T14:43:18.581614
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/AS1G05_250T01_9000000568_04525cztM0_level2.evt modeM0/AS1G05_250T01_9000000568_04525cztM0_level2_quad_clean.evt
Size (bytes)1,167,707,520181,117,440
Size1.1 GB 172.7 MB
Events in quadrant A11,426,6571,077,532
Events in quadrant B7,265,1271,119,659
Events in quadrant C6,876,8731,118,109
Events in quadrant D8,736,4361,088,797

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451894
B0326883
C0322043
D0368613

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1565813948.902797%
B156581250.798314%
C15658900.574786%
D156583952.522672%

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 18113 15660 807 807 4.46% 5.15%
B 18113 15661 16 16 0.09% 0.10%
C 18113 15661 12 12 0.07% 0.08%
D 18113 15661 224 224 1.24% 1.43%

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 0 13 4389651 12842.9 1677 1638 341.7
A 0 50 261182 759.64 1677 1638 341.7
A 8 15 179098 519.39 1677 1638 341.7
B 15 204 149856 442.03 1765 1721 335.1
B 4 48 98870 289.89 1765 1721 335.1
B 4 80 57711 167.07 1765 1721 335.1
C 9 247 195591 490.52 1705 1710 395.3
C 13 61 14022 31.15 1705 1710 395.3
C 13 112 10692 22.72 1705 1710 395.3
D 13 235 752051 1821.23 1680 1636 412.0
D 13 53 501928 1214.19 1680 1636 412.0
D 13 239 347042 838.29 1680 1636 412.0

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