ASTROSAT CZTI

Data Quality Report

Orbit 19747

Creation date: 2024-06-27T18:06:28.643208
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/AS1C04_001T01_9000002948_19747cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19747cztM0_level2_quad_clean.evt
Size (bytes)649,621,440119,073,600
Size619.5 MB 113.6 MB
Events in quadrant A5,230,174751,012
Events in quadrant B3,374,149829,506
Events in quadrant C6,084,428772,385
Events in quadrant D4,510,082764,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204711
B0147811
C0228411
D0183731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7004102514.634495%
B70051712.441113%
C70056349.050678%
D70053955.638829%

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 7249 7004 750 750 10.35% 10.71%
B 7250 7006 10 10 0.14% 0.14%
C 7250 7006 331 331 4.57% 4.72%
D 7250 7006 201 201 2.77% 2.87%

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 23 2170952 14237.97 755 738 152.4
A 0 226 138018 900.64 755 738 152.4
A 12 16 14570 90.75 755 738 152.4
B 7 220 125093 806.43 808 785 154.1
B 4 216 30949 195.68 808 785 154.1
B 0 197 29007 183.08 808 785 154.1
C 3 233 2916490 16530.16 759 762 176.4
C 14 238 118674 668.48 759 762 176.4
C 7 220 44772 249.51 759 762 176.4
D 1 52 1300855 7003.32 766 742 185.6
D 7 238 142995 766.27 766 742 185.6
D 10 230 93326 498.72 766 742 185.6

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