ASTROSAT CZTI

Data Quality Report

Orbit 36294

Creation date: 2024-06-27T21:25:04.980405
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/AS1A10_071T33_9000005186_36294cztM0_level2.evt modeM0/AS1A10_071T33_9000005186_36294cztM0_level2_quad_clean.evt
Size (bytes)454,780,80054,794,880
Size433.7 MB 52.3 MB
Events in quadrant A2,685,169327,115
Events in quadrant B3,453,580324,768
Events in quadrant C2,864,079322,884
Events in quadrant D4,393,871296,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113983
B0138712
C0117462
D0167592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A553860.108342%
B55381873.376670%
C5538340.613940%
D55383346.031058%

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 7001 5539 1 1 0.01% 0.02%
B 7001 5539 135 135 1.93% 2.44%
C 7001 5539 26 26 0.37% 0.47%
D 7001 5539 347 347 4.96% 6.26%

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 178776 1374.12 639 625 129.6
A 9 143 24847 186.83 639 625 129.6
A 13 6 10642 77.26 639 625 129.6
B 5 172 490648 4071.99 627 612 120.3
B 0 155 164698 1363.49 627 612 120.3
B 0 245 77377 637.88 627 612 120.3
C 15 214 235708 1605.04 621 625 146.5
C 0 10 187870 1278.43 621 625 146.5
C 15 159 13123 85.33 621 625 146.5
D 12 227 754949 5049.48 606 588 149.4
D 12 6 699793 4680.28 606 588 149.4
D 1 20 231874 1548.16 606 588 149.4

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