ASTROSAT CZTI

Data Quality Report

Orbit 06168

Creation date: 2024-06-27T15:03:40.928081
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_006T01_9000000802_06168cztM0_level2.evt modeM0/AS1A02_006T01_9000000802_06168cztM0_level2_quad_clean.evt
Size (bytes)478,681,92095,857,920
Size456.5 MB 91.4 MB
Events in quadrant A3,680,615606,007
Events in quadrant B3,590,269618,673
Events in quadrant C3,325,758597,710
Events in quadrant D3,409,776578,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158113
B0155482
C0150952
D0155522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7220951.315789%
B7220751.038781%
C7220200.277008%
D7220590.817175%

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 9415 7222 11 11 0.12% 0.15%
B 9415 7222 7 7 0.07% 0.10%
C 9415 7222 4 4 0.04% 0.06%
D 9415 7222 33 33 0.35% 0.46%

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 8 15 276446 1589.58 852 832 173.4
A 4 2 122096 699.38 852 832 173.4
A 0 226 8187 42.42 852 832 173.4
B 0 219 126324 753.66 865 843 166.5
B 4 81 46283 272.92 865 843 166.5
B 3 64 26564 154.48 865 843 166.5
C 12 16 85752 441.43 825 827 192.4
C 1 16 14237 69.7 825 827 192.4
C 13 61 6505 29.51 825 827 192.4
D 2 14 107680 526.13 819 792 203.2
D 12 110 56101 272.24 819 792 203.2
D 2 206 55898 271.25 819 792 203.2

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