ASTROSAT CZTI

Data Quality Report

Orbit 01181

Creation date: 2024-06-27T14:08:46.268238
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/AS1P01_997T02_9000000218_01181cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01181cztM0_level2_quad_clean.evt
Size (bytes)1,418,425,92089,121,600
Size1.3 GB 85.0 MB
Events in quadrant A7,904,030607,764
Events in quadrant B9,104,160572,100
Events in quadrant C7,467,425604,804
Events in quadrant D18,062,698468,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280322
B0316701
C0266841
D0586141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63621842.892172%
B636267010.531279%
C636250.078592%
D6362334352.546369%

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 7267 6363 379 379 5.22% 5.96%
B 7267 6363 954 954 13.13% 14.99%
C 7266 6362 122 122 1.68% 1.92%
D 7267 6363 6177 6177 85.00% 97.08%

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 4 32 673776 1500.24 1867 1881 447.9
A 15 233 59063 127.68 1867 1881 447.9
A 11 79 8384 14.52 1867 1881 447.9
B 8 234 1843658 4184.44 1869 1881 440.1
B 6 53 63721 140.5 1869 1881 440.1
B 15 22 24568 51.54 1869 1881 440.1
C 15 241 355322 695.41 1811 1877 508.3
C 3 111 20212 36.07 1811 1877 508.3
C 3 79 12262 20.43 1811 1877 508.3
D 1 239 10692503 22780.62 1518 1571 469.3
D 10 84 887710 1888.22 1518 1571 469.3
D 2 16 750467 1595.77 1518 1571 469.3

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