ASTROSAT CZTI

Data Quality Report

Orbit 36718

Creation date: 2024-06-27T21:30:43.551664
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/AS1A11_101T01_9000005238_36718cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36718cztM0_level2_quad_clean.evt
Size (bytes)1,224,354,240202,314,240
Size1.1 GB 192.9 MB
Events in quadrant A7,578,2761,291,456
Events in quadrant B8,747,2171,296,316
Events in quadrant C9,410,1741,261,635
Events in quadrant D10,283,5821,194,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327025
B0361644
C0376494
D0412194

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15703430.273833%
B157033081.961409%
C157034592.923008%
D157036364.050181%

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 19821 15707 11 11 0.06% 0.07%
B 19821 15707 209 209 1.05% 1.33%
C 19821 15707 350 350 1.77% 2.23%
D 19821 15707 520 520 2.62% 3.31%

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 10 83 563824 1568.58 1778 1742 358.3
A 9 143 109068 299.51 1778 1742 358.3
A 13 254 29489 77.43 1778 1742 358.3
B 5 255 792287 2358.66 1760 1712 335.2
B 0 189 377872 1122.26 1760 1712 335.2
B 4 171 155207 457.95 1760 1712 335.2
C 14 254 1136327 2857.17 1703 1711 397.1
C 0 10 897235 2255.09 1703 1711 397.1
C 15 214 698395 1754.38 1703 1711 397.1
D 12 233 1648485 3899.87 1707 1655 422.3
D 13 36 384893 907.55 1707 1655 422.3
D 2 250 333225 785.19 1707 1655 422.3

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