ASTROSAT CZTI

Data Quality Report

Orbit 13342

Creation date: 2024-06-27T16:39:25.370327
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_082T01_9000001986_13342cztM0_level2.evt modeM0/AS1G08_082T01_9000001986_13342cztM0_level2_quad_clean.evt
Size (bytes)1,225,995,840212,028,480
Size1.1 GB 202.2 MB
Events in quadrant A8,531,4751,302,444
Events in quadrant B9,560,1351,320,343
Events in quadrant C8,682,6491,302,769
Events in quadrant D9,122,6711,240,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377105
B0402454
C0378424
D0401164

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182122321.273885%
B182123371.850428%
C182121810.993850%
D182123932.157918%

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 21668 18217 0 0 0.00% 0.00%
B 21668 18217 64 64 0.30% 0.35%
C 21668 18217 2 2 0.01% 0.01%
D 21668 18217 199 199 0.92% 1.09%

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 8 15 31575 66.64 2198 2146 441.6
A 1 162 31413 66.28 2198 2146 441.6
A 0 226 19223 38.67 2198 2146 441.6
B 10 245 364612 869.46 2198 2142 416.9
B 3 64 269979 642.46 2198 2142 416.9
B 0 230 109979 258.67 2198 2142 416.9
C 3 233 310565 626.86 2141 2151 492.0
C 14 234 28615 53.79 2141 2151 492.0
C 13 61 15423 26.98 2141 2151 492.0
D 5 222 443039 871.97 2121 2058 505.7
D 1 52 242894 476.22 2121 2058 505.7
D 14 34 182450 356.7 2121 2058 505.7

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