ASTROSAT CZTI

Data Quality Report

Orbit 10839

Creation date: 2024-06-27T16:04:23.037361
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/AS1A03_086T01_9000001568_10839cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10839cztM0_level2_quad_clean.evt
Size (bytes)534,352,32073,526,400
Size509.6 MB 70.1 MB
Events in quadrant A5,102,076457,808
Events in quadrant B4,762,113455,857
Events in quadrant C2,810,615464,848
Events in quadrant D3,113,797441,138

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189622
B0179441
C0120081
D0129041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A581967711.634301%
B58194788.214470%
C5819230.395257%
D5819941.615398%

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 7014 5820 460 460 6.56% 7.90%
B 7013 5819 269 269 3.84% 4.62%
C 7014 5820 1 1 0.01% 0.02%
D 7014 5820 49 49 0.70% 0.84%

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 5 2265224 15716.85 712 699 144.1
A 13 251 66951 459.82 712 699 144.1
A 11 29 8756 55.92 712 699 144.1
B 4 239 1707776 12481.59 720 707 136.8
B 3 189 148488 1080.53 720 707 136.8
B 0 214 59444 429.47 720 707 136.8
C 14 234 9769 54.11 718 723 167.2
C 13 61 5394 27.94 718 723 167.2
C 5 207 1920 7.16 718 723 167.2
D 2 14 96871 556.47 717 699 172.8
D 9 85 91151 523.38 717 699 172.8
D 13 104 82757 474.81 717 699 172.8

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