ASTROSAT CZTI

Data Quality Report

Orbit 20692

Creation date: 2024-06-27T18:18:25.663324
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/AS1A05_229T02_9000003060_20692cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20692cztM0_level2_quad_clean.evt
Size (bytes)962,429,760158,083,200
Size917.8 MB 150.8 MB
Events in quadrant A5,881,2841,016,423
Events in quadrant B6,420,4641,020,089
Events in quadrant C6,022,145988,999
Events in quadrant D9,955,540875,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260763
B0274053
C0261353
D0382983

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12827530.413191%
B128281401.091363%
C128281030.802931%
D12828136910.671968%

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 14727 12830 0 0 0.00% 0.00%
B 14728 12831 41 41 0.28% 0.32%
C 14728 12831 0 0 0.00% 0.00%
D 14728 12831 1137 1137 7.72% 8.86%

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 0 226 13228 38.0 1528 1495 308.8
A 3 137 12818 36.67 1528 1495 308.8
A 12 194 10911 30.5 1528 1495 308.8
B 7 220 272528 941.08 1524 1486 288.0
B 3 64 54445 183.88 1524 1486 288.0
B 12 111 34966 116.24 1524 1486 288.0
C 14 238 228183 660.76 1463 1471 343.1
C 9 54 31226 86.72 1463 1471 343.1
C 7 247 29391 81.37 1463 1471 343.1
D 1 52 4036370 11933.24 1388 1346 338.1
D 5 222 382359 1126.81 1388 1346 338.1
D 7 238 105230 307.23 1388 1346 338.1

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