ASTROSAT CZTI

Data Quality Report

Orbit 39035

Creation date: 2024-06-27T21:59:23.589279
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/AS1A12_042T01_9000005428_39035cztM0_level2.fits modeM0/AS1A12_042T01_9000005428_39035cztM0_level2_quad_clean.evt
Size (bytes)1,000,298,880223,119,360
Size954.0 MB 212.8 MB
Events in quadrant A15,727,5531,421,514
Events in quadrant B6,275,1071,541,235
Events in quadrant C6,752,9551,475,194
Events in quadrant D7,200,8791,361,167

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0565042
B0284872
C0290792
D0315132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1385512959.346806%
B13855510.368098%
C13855240.173223%
D138551501.082642%

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 16541 13857 1042 1042 6.30% 7.52%
B 16541 13857 30 30 0.18% 0.22%
C 16541 13857 20 20 0.12% 0.14%
D 16541 13857 107 107 0.65% 0.77%

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 15 222 8604849 28817.37 1487 1456 298.5
A 10 83 889401 2974.2 1487 1456 298.5
A 6 10 300322 1001.06 1487 1456 298.5
B 5 184 197203 677.92 1505 1461 288.7
B 0 230 46010 154.29 1505 1461 288.7
B 5 172 44013 147.37 1505 1461 288.7
C 15 214 569024 1669.91 1478 1487 339.9
C 15 208 363472 1065.1 1478 1487 339.9
C 3 233 20311 55.39 1478 1487 339.9
D 12 227 473000 1317.08 1478 1433 358.0
D 2 249 375646 1045.17 1478 1433 358.0
D 12 233 233948 649.41 1478 1433 358.0

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