ASTROSAT CZTI

Data Quality Report

Orbit 18334

Creation date: 2024-06-27T17:48:29.356203
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/AS1A06_006T01_9000002720_18334cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18334cztM0_level2_quad_clean.evt
Size (bytes)578,617,92089,847,360
Size551.8 MB 85.7 MB
Events in quadrant A3,106,749577,723
Events in quadrant B3,346,596583,698
Events in quadrant C3,231,293567,382
Events in quadrant D7,385,024524,517

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136582
B0142722
C0138162
D0266032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6705100.149142%
B6706430.641217%
C6706490.730689%
D67063184.742022%

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 8560 6707 0 0 0.00% 0.00%
B 8561 6708 10 10 0.12% 0.15%
C 8561 6708 0 0 0.00% 0.00%
D 8561 6708 291 291 3.40% 4.34%

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 15 174 8272 46.1 804 788 162.4
A 0 226 7171 39.31 804 788 162.4
A 3 137 5845 31.15 804 788 162.4
B 7 220 120912 774.96 808 788 155.0
B 0 197 32285 203.2 808 788 155.0
B 4 216 18785 116.11 808 788 155.0
C 14 238 118280 651.38 770 777 180.4
C 3 233 99497 547.26 770 777 180.4
C 0 207 11266 58.15 770 777 180.4
D 13 168 3424311 18125.38 767 743 188.9
D 1 52 601649 3181.37 767 743 188.9
D 7 238 279435 1475.48 767 743 188.9

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