ASTROSAT CZTI

Data Quality Report

Orbit 17345

Creation date: 2024-06-27T17:35:16.116931
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/AS1A05_025T16_9000002560_17345cztM0_level2.evt modeM0/AS1A05_025T16_9000002560_17345cztM0_level2_quad_clean.evt
Size (bytes)509,235,840107,147,520
Size485.6 MB 102.2 MB
Events in quadrant A3,524,724697,586
Events in quadrant B3,650,564701,941
Events in quadrant C3,681,649661,635
Events in quadrant D4,045,116651,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157732
B0159022
C0160362
D0175962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7653300.392003%
B7653911.189076%
C76531201.568013%
D76541221.593938%

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 8248 7655 0 0 0.00% 0.00%
B 8248 7655 0 0 0.00% 0.00%
C 8248 7655 0 0 0.00% 0.00%
D 8249 7656 69 69 0.84% 0.90%

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 0 226 7833 37.23 915 895 186.4
A 3 137 7354 34.66 915 895 186.4
A 12 194 6679 31.04 915 895 186.4
B 0 214 22337 119.78 918 892 179.0
B 12 111 21917 117.43 918 892 179.0
B 11 111 18952 100.87 918 892 179.0
C 14 238 134299 644.86 877 877 206.9
C 3 233 100262 480.35 877 877 206.9
C 8 128 13354 60.3 877 877 206.9
D 5 222 299460 1392.57 880 854 214.4
D 13 189 137629 637.86 880 854 214.4
D 1 52 106193 491.26 880 854 214.4

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