ASTROSAT CZTI

Data Quality Report

Orbit 44956

Creation date: 2024-06-27T23:08:23.696530
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/AS1A13_017T02_9000006032_44956cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44956cztM0_level2_quad_clean.evt
Size (bytes)613,609,920112,466,880
Size585.2 MB 107.3 MB
Events in quadrant A5,686,619757,823
Events in quadrant B4,430,584762,235
Events in quadrant C3,385,168773,275
Events in quadrant D8,663,993619,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220533
B0180184
C0149973
D0307423

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70712443.450714%
B70714105.798331%
C7071871.230378%
D7071117116.560600%

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 7206 7075 1 1 0.01% 0.01%
B 7206 7075 97 97 1.35% 1.37%
C 7206 7075 7 7 0.10% 0.10%
D 7206 7075 845 845 11.73% 11.94%

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 2433759 14100.87 828 809 172.5
A 0 243 23524 131.65 828 809 172.5
A 3 137 9475 50.23 828 809 172.5
B 4 171 411081 2565.71 812 788 159.9
B 15 36 153607 955.63 812 788 159.9
B 5 255 132395 822.99 812 788 159.9
C 12 250 65698 336.42 820 826 192.8
C 12 2 65544 335.62 820 826 192.8
C 3 233 23448 117.31 820 826 192.8
D 12 33 2346814 11755.63 778 754 199.6
D 5 222 642181 3214.06 778 754 199.6
D 1 52 565607 2830.36 778 754 199.6

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