ASTROSAT CZTI

Data Quality Report

Orbit 21464

Creation date: 2024-06-27T18:28:10.288365
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_005T09_9000003168_21464cztM0_level2.evt modeM0/AS1A06_005T09_9000003168_21464cztM0_level2_quad_clean.evt
Size (bytes)499,993,92069,096,960
Size476.8 MB 65.9 MB
Events in quadrant A3,355,651414,714
Events in quadrant B3,534,330426,807
Events in quadrant C3,464,656413,331
Events in quadrant D4,357,625394,793

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137212
B0143312
C0141832
D0170552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6336480.757576%
B6337831.309768%
C63371161.830519%
D63371702.682657%

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 8791 6336 0 0 0.00% 0.00%
B 8792 6337 1 1 0.01% 0.02%
C 8792 6337 0 0 0.00% 0.00%
D 8792 6337 122 122 1.39% 1.93%

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 19809 110.75 866 850 171.2
A 13 254 8685 45.77 866 850 171.2
A 0 226 7306 37.71 866 850 171.2
B 0 197 51658 312.49 873 853 162.6
B 0 230 26332 156.71 873 853 162.6
B 0 190 26302 156.53 873 853 162.6
C 14 238 136926 704.42 847 858 193.2
C 3 233 20171 99.98 847 858 193.2
C 13 61 5962 26.42 847 858 193.2
D 1 20 448064 2225.23 844 824 201.0
D 13 174 436376 2167.08 844 824 201.0
D 1 52 156633 775.22 844 824 201.0

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