ASTROSAT CZTI

Data Quality Report

Orbit 22849

Creation date: 2024-06-27T18:46:34.278767
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/AS1C05_001T01_9000003374_22849cztM0_level2.evt modeM0/AS1C05_001T01_9000003374_22849cztM0_level2_quad_clean.evt
Size (bytes)907,758,720220,947,840
Size865.7 MB 210.7 MB
Events in quadrant A6,077,4351,517,444
Events in quadrant B6,040,9841,526,864
Events in quadrant C5,514,0541,450,846
Events in quadrant D9,046,8311,366,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262430
B0257670
C0244630
D0351520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12001480.399967%
B120021030.858190%
C120021120.933178%
D120029447.865356%

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 13066 12003 0 0 0.00% 0.00%
B 13067 12004 10 10 0.08% 0.08%
C 13067 12004 3 3 0.02% 0.02%
D 13067 12003 740 740 5.66% 6.17%

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 11 47 497218 1736.94 1411 1381 285.5
A 13 252 111996 387.49 1411 1381 285.5
A 3 1 25460 84.35 1411 1381 285.5
B 0 190 349919 1320.56 1408 1373 263.9
B 0 189 54956 203.01 1408 1373 263.9
B 4 21 46101 169.46 1408 1373 263.9
C 14 238 213120 673.61 1343 1351 314.4
C 7 247 42972 132.39 1343 1351 314.4
C 2 16 12022 33.94 1343 1351 314.4
D 1 52 2511495 7763.41 1316 1278 323.3
D 1 239 532536 1643.03 1316 1278 323.3
D 2 152 369118 1137.63 1316 1278 323.3

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