ASTROSAT CZTI

Data Quality Report

Orbit 15229

Creation date: 2024-06-27T17:05:35.528754
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_105T01_9000002248_15229cztM0_level2.evt modeM0/AS1A04_105T01_9000002248_15229cztM0_level2_quad_clean.evt
Size (bytes)1,174,112,640151,421,760
Size1.1 GB 144.4 MB
Events in quadrant A15,085,903925,253
Events in quadrant B5,918,436995,724
Events in quadrant C8,026,604954,163
Events in quadrant D5,760,617922,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0524914
B0248043
C0314113
D0251423

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11379270723.789437%
B11379930.817295%
C113794513.963441%
D11379450.395465%

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 13800 11382 2724 2724 19.74% 23.93%
B 13800 11382 16 16 0.12% 0.14%
C 13800 11382 401 401 2.91% 3.52%
D 13800 11382 26 26 0.19% 0.23%

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 0 253 9720940 35703.99 1348 1322 272.2
A 12 189 176834 644.72 1348 1322 272.2
A 0 226 12004 39.24 1348 1322 272.2
B 0 189 95458 354.95 1414 1382 265.0
B 3 64 92901 345.31 1414 1382 265.0
B 10 245 45430 166.2 1414 1382 265.0
C 3 233 2492662 8101.6 1341 1352 307.5
C 4 254 203957 658.86 1341 1352 307.5
C 7 247 56577 179.59 1341 1352 307.5
D 2 16 313887 948.21 1348 1306 329.7
D 7 38 135770 407.89 1348 1306 329.7
D 13 172 86559 258.61 1348 1306 329.7

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