ASTROSAT CZTI

Data Quality Report

Orbit 15912

Creation date: 2024-06-27T17:15:03.133797
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_143T01_9000002344_15912cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15912cztM0_level2_quad_clean.evt
Size (bytes)688,559,040116,922,240
Size656.7 MB 111.5 MB
Events in quadrant A5,634,373710,233
Events in quadrant B5,072,672738,886
Events in quadrant C4,759,544702,281
Events in quadrant D4,701,096689,092

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022521
B022626
C022620
D022624

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255282320
B0239122237
C0229082204
D0232832158

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A100942182.159699%
B101102062.037587%
C101031701.682669%
D101251431.412346%

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 10875 10263 9 9 0.08% 0.09%
B 10882 10280 40 40 0.37% 0.39%
C 10917 10291 0 0 0.00% 0.00%
D 10899 10313 23 23 0.21% 0.22%

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 1001198 4116.26 1202 1175 242.9
A 9 143 12662 47.28 1202 1175 242.9
A 0 226 10769 39.49 1202 1175 242.9
B 4 142 166830 710.31 1209 1178 233.2
B 4 173 73115 308.46 1209 1178 233.2
B 0 228 40519 168.69 1209 1178 233.2
C 14 238 178094 643.05 1164 1169 275.1
C 3 233 27112 94.29 1164 1169 275.1
C 13 61 8084 25.13 1164 1169 275.1
D 10 70 125362 427.6 1188 1154 290.5
D 2 234 48982 164.65 1188 1154 290.5
D 1 52 22402 73.15 1188 1154 290.5

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