ASTROSAT CZTI

Data Quality Report

Orbit 23805

Creation date: 2024-06-27T18:58:55.747363
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_113T01_9000003526_23805cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23805cztM0_level2_quad_clean.evt
Size (bytes)789,433,92070,994,880
Size752.9 MB 67.7 MB
Events in quadrant A2,944,048477,982
Events in quadrant B3,420,667490,697
Events in quadrant C3,074,666474,693
Events in quadrant D14,047,254270,406

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126101
B0139641
C0128781
D0459561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6224380.610540%
B62251051.686747%
C6225771.236948%
D6225510481.991968%

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 7109 6224 0 0 0.00% 0.00%
B 7110 6225 44 44 0.62% 0.71%
C 7110 6225 6 6 0.08% 0.10%
D 7110 6225 5002 5002 70.35% 80.35%

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 10726 64.53 762 745 154.7
A 3 137 6788 39.07 762 745 154.7
A 0 226 6435 36.79 762 745 154.7
B 3 64 426670 2896.08 758 739 147.1
B 12 111 17538 114.22 758 739 147.1
B 11 111 15778 102.26 758 739 147.1
C 14 238 117398 680.98 731 736 171.3
C 2 16 103427 599.43 731 736 171.3
C 13 61 4952 24.61 731 736 171.3
D 8 195 7086565 56349.3 512 498 125.8
D 13 174 4807522 38226.06 512 498 125.8
D 1 52 173686 1377.21 512 498 125.8

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