ASTROSAT CZTI

Data Quality Report

Orbit 09850

Creation date: 2024-06-27T15:51:26.187807
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/AS1A03_134T01_9000001400_09850cztM0_level2.evt modeM0/AS1A03_134T01_9000001400_09850cztM0_level2_quad_clean.evt
Size (bytes)898,813,440169,562,880
Size857.2 MB 161.7 MB
Events in quadrant A6,042,7521,073,684
Events in quadrant B6,424,1751,080,031
Events in quadrant C6,005,6211,051,550
Events in quadrant D7,843,2991,007,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02729657
B02805051
C02725835
D03256187

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02742
B02742
C02740
D02740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0161
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133532111.580169%
B133582281.706842%
C133631881.406870%
D133504643.475655%

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 14973 13380 0 0 0.00% 0.00%
B 14973 13380 4 4 0.03% 0.03%
C 14973 13381 0 0 0.00% 0.00%
D 14973 13377 170 170 1.14% 1.27%

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 14454 41.08 1569 1537 314.4
A 12 194 12625 35.27 1569 1537 314.4
A 3 137 7443 18.78 1569 1537 314.4
B 0 214 81591 268.82 1574 1535 297.8
B 0 229 58020 189.67 1574 1535 297.8
B 4 81 54286 177.13 1574 1535 297.8
C 10 22 15301 38.99 1528 1533 353.1
C 8 128 11835 29.17 1528 1533 353.1
C 13 61 11480 28.17 1528 1533 353.1
D 1 52 1344804 3476.76 1498 1466 386.4
D 12 233 332469 856.69 1498 1466 386.4
D 2 16 164246 421.3 1498 1466 386.4

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