ASTROSAT CZTI

Data Quality Report

Orbit 20240331_A13_033T01_9000006152_level2

Creation date: 2024-04-03T14:22:55.696081
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_033T01_9000006152cztM0_level2.fits modeM0/AS1A13_033T01_9000006152cztM0_level2_quad_clean.evt
Size (bytes)559,889,280564,281,280
Size534.0 MB 538.1 MB
Events in quadrant A3,344,6243,411,464
Events in quadrant B2,935,6212,817,933
Events in quadrant C3,399,0733,420,340
Events in quadrant D2,932,5593,103,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02028130
B02971490
C01443330
D01562640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012800
B012780
C012840
D010220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6335116922.670834%
B632981637025.861797%
C6344717992.835437%
D6352316312.567574%

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 72447 63423 0 0 0.00% 0.00%
B 72447 63340 0 0 0.00% 0.00%
C 72448 63378 0 0 0.00% 0.00%
D 72448 63557 0 0 0.00% 0.00%

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 29 2702 8.39 870 809 225.5
A 15 236 2681 8.3 870 809 225.5
A 7 110 2673 8.26 870 809 225.5
B 2 9 2622 11.8 773 729 160.4
B 2 8 2099 8.54 773 729 160.4
B 5 232 2003 7.94 773 729 160.4
C 3 203 2553 7.43 897 834 231.4
C 3 202 2519 7.28 897 834 231.4
C 1 81 2519 7.28 897 834 231.4
D 4 250 2183 6.13 840 762 231.7
D 12 6 2140 5.94 840 762 231.7
D 10 189 2109 5.81 840 762 231.7

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