ASTROSAT CZTI

Data Quality Report

Orbit 18327

Creation date: 2024-06-27T17:48:24.553931
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/AS1A06_006T01_9000002720_18327cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18327cztM0_level2_quad_clean.evt
Size (bytes)512,357,76089,043,840
Size488.6 MB 84.9 MB
Events in quadrant A3,417,352563,355
Events in quadrant B3,569,718568,328
Events in quadrant C3,534,118556,213
Events in quadrant D4,535,526536,223

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142513
B0146063
C0143033
D0178233

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67681412.083333%
B67681442.127660%
C67681542.275414%
D67682914.299645%

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 7643 6770 20 20 0.26% 0.30%
B 7643 6770 3 3 0.04% 0.04%
C 7643 6770 2 2 0.03% 0.03%
D 7643 6770 153 153 2.00% 2.26%

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 15 174 85508 486.47 864 845 174.0
A 0 226 7630 38.99 864 845 174.0
A 4 2 6596 33.05 864 845 174.0
B 7 220 161812 990.43 860 840 162.5
B 12 111 18808 110.55 860 840 162.5
B 0 197 18417 108.15 860 840 162.5
C 3 233 166600 859.88 827 831 192.8
C 14 238 128716 663.37 827 831 192.8
C 0 207 9522 45.08 827 831 192.8
D 1 52 995849 4926.65 837 814 202.0
D 7 238 132506 652.04 837 814 202.0
D 2 69 111344 547.26 837 814 202.0

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