ASTROSAT CZTI

Data Quality Report

Orbit 15275

Creation date: 2024-06-27T17:06:12.424232
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/AS1A04_207T01_9000002254_15275cztM0_level2.evt modeM0/AS1A04_207T01_9000002254_15275cztM0_level2_quad_clean.evt
Size (bytes)552,792,96099,141,120
Size527.2 MB 94.5 MB
Events in quadrant A3,934,054616,156
Events in quadrant B4,147,004623,421
Events in quadrant C4,192,951617,246
Events in quadrant D3,922,017586,964

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170783
B0173712
C0171432
D0175582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80361101.368840%
B80361772.202588%
C8036831.032852%
D80361612.003484%

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 8732 8040 9 9 0.10% 0.11%
B 8732 8040 22 22 0.25% 0.27%
C 8732 8040 0 0 0.00% 0.00%
D 8732 8040 56 56 0.64% 0.70%

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 12 189 103672 519.27 967 946 197.8
A 4 2 49561 245.74 967 946 197.8
A 9 143 49086 243.34 967 946 197.8
B 0 219 103904 548.48 972 947 187.7
B 0 197 65502 343.9 972 947 187.7
B 0 189 38389 199.46 972 947 187.7
C 3 233 502422 2269.03 942 945 221.0
C 8 128 11094 45.92 942 945 221.0
C 13 61 6875 26.83 942 945 221.0
D 2 33 205347 888.78 934 904 230.0
D 7 38 110417 476.09 934 904 230.0
D 2 234 33153 140.2 934 904 230.0

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