ASTROSAT CZTI

Data Quality Report

Orbit 21964

Creation date: 2024-06-27T18:34:37.501493
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/AS1A07_130T01_9000003246_21964cztM0_level2.evt modeM0/AS1A07_130T01_9000003246_21964cztM0_level2_quad_clean.evt
Size (bytes)582,739,200120,159,360
Size555.7 MB 114.6 MB
Events in quadrant A3,912,737771,880
Events in quadrant B4,211,176785,150
Events in quadrant C4,007,363764,775
Events in quadrant D4,950,229737,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172222
B0179342
C0173312
D0205462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8347430.515155%
B83481351.617154%
C83481141.365597%
D83482753.294202%

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 8977 8349 0 0 0.00% 0.00%
B 8978 8349 38 38 0.42% 0.46%
C 8978 8349 0 0 0.00% 0.00%
D 8978 8350 208 208 2.32% 2.49%

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 13 254 14569 66.79 1008 986 203.4
A 2 79 12285 55.56 1008 986 203.4
A 3 1 10984 49.16 1008 986 203.4
B 3 64 199846 1032.4 1007 978 192.6
B 0 197 27859 139.55 1007 978 192.6
B 0 230 24150 120.29 1007 978 192.6
C 14 238 154417 659.56 983 990 232.6
C 9 54 17392 70.51 983 990 232.6
C 13 61 6922 25.5 983 990 232.6
D 13 174 810050 3385.16 980 951 239.0
D 13 172 181694 756.2 980 951 239.0
D 2 136 167783 698.0 980 951 239.0

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