ASTROSAT CZTI

Data Quality Report

Orbit 14464

Creation date: 2024-06-27T16:55:32.333257
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/AS1G08_025T01_9000002130_14464cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14464cztM0_level2_quad_clean.evt
Size (bytes)1,259,424,000234,475,200
Size1.2 GB 223.6 MB
Events in quadrant A8,855,9081,488,426
Events in quadrant B9,308,0531,471,238
Events in quadrant C9,335,5191,453,776
Events in quadrant D9,411,8271,434,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381214
B0396613
C0388403
D0403663

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181874302.364326%
B181874652.556771%
C181872551.402100%
D181873932.160884%

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 19443 18192 9 9 0.05% 0.05%
B 19443 18191 12 12 0.06% 0.07%
C 19443 18191 0 0 0.00% 0.00%
D 19443 18191 137 137 0.70% 0.75%

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 189263 417.48 2214 2167 448.2
A 13 248 44627 94.74 2214 2167 448.2
A 15 222 40823 86.26 2214 2167 448.2
B 0 219 220100 521.82 2192 2139 417.7
B 0 189 192197 455.01 2192 2139 417.7
B 10 252 64780 149.97 2192 2139 417.7
C 3 233 1021374 2080.46 2127 2137 489.9
C 13 61 15242 26.75 2127 2137 489.9
C 10 22 11502 19.11 2127 2137 489.9
D 10 199 482056 859.33 2120 2074 558.6
D 12 110 322711 574.05 2120 2074 558.6
D 2 120 309329 550.09 2120 2074 558.6

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