ASTROSAT CZTI

Data Quality Report

Orbit 22835

Creation date: 2024-06-27T18:46:25.035817
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/AS1C05_001T01_9000003374_22835cztM0_level2.evt modeM0/AS1C05_001T01_9000003374_22835cztM0_level2_quad_clean.evt
Size (bytes)478,725,120123,120,000
Size456.5 MB 117.4 MB
Events in quadrant A3,050,098841,429
Events in quadrant B3,126,951852,051
Events in quadrant C3,024,396804,037
Events in quadrant D4,843,101765,861

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135061
B0137231
C0134431
D0188601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6677230.344466%
B6677240.359443%
C6676390.584182%
D66764176.246255%

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 7522 6678 0 0 0.00% 0.00%
B 7522 6678 3 3 0.04% 0.04%
C 7521 6677 0 0 0.00% 0.00%
D 7521 6677 394 394 5.24% 5.90%

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 11 47 45796 287.25 776 761 156.8
A 13 252 12219 73.08 776 761 156.8
A 13 254 11371 67.68 776 761 156.8
B 0 190 27722 180.65 777 755 149.3
B 0 230 18160 116.6 777 755 149.3
B 12 111 18145 116.5 777 755 149.3
C 14 238 118442 673.15 744 747 174.8
C 13 61 5123 25.03 744 747 174.8
C 0 239 3628 16.48 744 747 174.8
D 1 52 1593887 8916.62 733 712 178.7
D 12 227 147000 818.74 733 712 178.7
D 7 223 132828 739.42 733 712 178.7

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