ASTROSAT CZTI

Data Quality Report

Orbit 26867

Creation date: 2024-06-27T19:33:51.426855
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/AS1T03_224T01_9000003872_26867cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26867cztM0_level2_quad_clean.evt
Size (bytes)510,468,48075,182,400
Size486.8 MB 71.7 MB
Events in quadrant A3,860,164460,677
Events in quadrant B3,739,413473,809
Events in quadrant C3,376,548456,746
Events in quadrant D4,052,037441,494

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152360
B0148540
C0136700
D0159650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63621662.609242%
B63621522.389186%
C63621442.263439%
D63621892.970764%

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 7547 6363 56 56 0.74% 0.88%
B 7547 6362 29 29 0.38% 0.46%
C 7547 6362 0 0 0.00% 0.00%
D 7547 6362 115 115 1.52% 1.81%

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 547602 3235.05 856 842 169.0
A 12 96 12523 69.11 856 842 169.0
A 13 254 10094 54.74 856 842 169.0
B 10 246 149977 923.73 857 834 161.5
B 0 190 129495 796.87 857 834 161.5
B 0 189 79051 484.44 857 834 161.5
C 14 238 134330 693.0 832 840 192.6
C 13 61 5832 25.92 832 840 192.6
C 3 233 2943 10.92 832 840 192.6
D 7 80 624636 3237.65 830 813 192.7
D 2 250 113945 587.16 830 813 192.7
D 12 227 95834 493.16 830 813 192.7

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