ASTROSAT CZTI

Data Quality Report

Orbit 03887

Creation date: 2024-06-27T14:34:48.331061
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/AS1G05_239T02_9000000496_03887cztM0_level2.evt modeM0/AS1G05_239T02_9000000496_03887cztM0_level2_quad_clean.evt
Size (bytes)1,492,263,360190,480,320
Size1.4 GB 181.7 MB
Events in quadrant A9,659,4781,148,056
Events in quadrant B9,384,3281,152,709
Events in quadrant C15,136,7231,115,046
Events in quadrant D9,776,8001,089,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416864
B0401823
C0576813
D0426323

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183323942.149247%
B183321650.900065%
C183326203.382064%
D183325533.016583%

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 19942 18332 241 241 1.21% 1.31%
B 19942 18332 19 19 0.10% 0.10%
C 19942 18332 556 556 2.79% 3.03%
D 19942 18332 480 480 2.41% 2.62%

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 0 118 455264 1068.34 2057 2008 424.3
A 15 174 408203 957.42 2057 2008 424.3
A 0 199 342561 802.7 2057 2008 424.3
B 15 204 933268 2285.43 2092 2040 407.5
B 4 48 84084 201.35 2092 2040 407.5
B 4 81 52248 123.22 2092 2040 407.5
C 2 53 7312536 15696.57 1987 1995 465.7
C 14 67 30295 60.76 1987 1995 465.7
C 13 61 16840 31.87 1987 1995 465.7
D 13 25 838082 1731.4 1978 1920 482.9
D 14 34 486752 1003.92 1978 1920 482.9
D 13 223 182210 373.32 1978 1920 482.9

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
Veto Counter