ASTROSAT CZTI

Data Quality Report

Orbit 18237

Creation date: 2024-06-27T17:47:10.664233
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/AS1C04_001T01_9000002716_18237cztM0_level2.evt modeM0/AS1C04_001T01_9000002716_18237cztM0_level2_quad_clean.evt
Size (bytes)388,353,600103,458,240
Size370.4 MB 98.7 MB
Events in quadrant A2,894,148717,474
Events in quadrant B2,558,938735,054
Events in quadrant C2,419,610686,720
Events in quadrant D3,546,500641,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118512
B0107222
C0103892
D0140082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50221142.270012%
B5022300.597372%
C5022450.896057%
D50224518.980486%

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 6382 5023 73 73 1.14% 1.45%
B 6382 5023 5 5 0.08% 0.10%
C 6382 5023 0 0 0.00% 0.00%
D 6382 5023 368 368 5.77% 7.33%

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 474962 3741.94 628 614 126.8
A 0 226 5688 40.02 628 614 126.8
A 12 194 4636 31.72 628 614 126.8
B 0 189 46189 389.12 628 614 117.1
B 7 220 30903 258.61 628 614 117.1
B 12 111 12776 103.84 628 614 117.1
C 14 238 95954 701.63 592 595 135.9
C 7 174 9644 66.58 592 595 135.9
C 3 233 4700 30.2 592 595 135.9
D 7 238 1049257 7578.62 573 559 138.4
D 1 52 213699 1540.3 573 559 138.4
D 13 104 52505 375.4 573 559 138.4

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