ASTROSAT CZTI

Data Quality Report

Orbit 15187

Creation date: 2024-06-27T17:04:59.600388
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/AS1T02_068T01_9000002238_15187cztM0_level2.evt modeM0/AS1T02_068T01_9000002238_15187cztM0_level2_quad_clean.evt
Size (bytes)566,133,12095,028,480
Size539.9 MB 90.6 MB
Events in quadrant A4,040,111587,690
Events in quadrant B4,039,124592,310
Events in quadrant C4,538,964579,462
Events in quadrant D3,984,090561,940

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173723
B0170132
C0184332
D0174032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80042112.636182%
B80042433.035982%
C80041351.686657%
D80041351.686657%

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 9225 8007 0 0 0.00% 0.00%
B 9225 8007 22 22 0.24% 0.27%
C 9225 8008 0 0 0.00% 0.00%
D 9225 8008 26 26 0.28% 0.32%

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 15 239 127753 627.14 996 972 202.2
A 12 189 79417 388.04 996 972 202.2
A 0 226 8528 37.38 996 972 202.2
B 3 64 57698 292.06 997 971 194.2
B 4 48 49428 249.49 997 971 194.2
B 12 111 23423 115.6 997 971 194.2
C 3 233 748498 3311.93 969 974 225.7
C 0 207 10238 41.04 969 974 225.7
C 13 61 6915 26.32 969 974 225.7
D 10 70 102281 431.54 965 939 234.8
D 2 33 94147 396.91 965 939 234.8
D 13 249 44142 183.97 965 939 234.8

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