ASTROSAT CZTI

Data Quality Report

Orbit 24142

Creation date: 2024-06-27T19:02:35.757484
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/AS1A07_069T01_9000003570_24142cztM0_level2.evt modeM0/AS1A07_069T01_9000003570_24142cztM0_level2_quad_clean.evt
Size (bytes)563,365,44069,477,120
Size537.3 MB 66.3 MB
Events in quadrant A3,370,096442,767
Events in quadrant B3,476,787454,057
Events in quadrant C3,405,196417,574
Events in quadrant D6,381,459347,942

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137000
B0141060
C0137990
D0231940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6320220.348101%
B6320340.537975%
C6321510.806834%
D632196115.203291%

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 7600 6321 0 0 0.00% 0.00%
B 7600 6320 2 2 0.03% 0.03%
C 7601 6322 0 0 0.00% 0.00%
D 7601 6321 855 855 11.25% 13.53%

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 13 254 10581 56.45 874 861 172.2
A 0 226 7503 38.57 874 861 172.2
A 3 137 7070 36.06 874 861 172.2
B 12 111 18676 110.5 876 858 161.2
B 11 111 16370 96.2 876 858 161.2
B 15 32 15512 90.88 876 858 161.2
C 14 238 132010 693.0 821 830 189.3
C 3 233 28172 144.44 821 830 189.3
C 1 16 25847 132.16 821 830 189.3
D 7 238 3172435 17141.65 769 749 185.0
D 1 52 155481 836.26 769 749 185.0
D 8 195 141018 758.1 769 749 185.0

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