ASTROSAT CZTI

Data Quality Report

Orbit 06182

Creation date: 2024-06-27T15:03:51.901140
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/AS1A02_152T01_9000000806_06182cztM0_level2.evt modeM0/AS1A02_152T01_9000000806_06182cztM0_level2_quad_clean.evt
Size (bytes)422,406,72095,826,240
Size402.8 MB 91.4 MB
Events in quadrant A3,123,753623,999
Events in quadrant B3,265,653638,289
Events in quadrant C2,925,605605,616
Events in quadrant D3,040,460585,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134943
B0139482
C0132482
D0137202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6436210.326290%
B6436480.745805%
C643680.124301%
D6437280.434985%

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 7581 6437 0 0 0.00% 0.00%
B 7581 6437 11 11 0.15% 0.17%
C 7581 6437 0 0 0.00% 0.00%
D 7582 6438 9 9 0.12% 0.14%

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 15 234 91084 568.96 775 759 158.8
A 8 15 49365 306.17 775 759 158.8
A 0 226 7486 42.37 775 759 158.8
B 3 64 143432 954.94 784 766 149.4
B 4 80 31261 204.12 784 766 149.4
B 0 219 20001 128.75 784 766 149.4
C 1 16 12822 69.83 744 748 172.9
C 9 16 5995 30.35 744 748 172.9
C 13 61 5871 29.63 744 748 172.9
D 2 136 175297 968.98 739 718 180.2
D 8 195 24419 131.55 739 718 180.2
D 2 14 21956 117.88 739 718 180.2

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