ASTROSAT CZTI

Data Quality Report

Orbit 36741

Creation date: 2024-06-27T21:31:03.317949
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_36741cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36741cztM0_level2_quad_clean.evt
Size (bytes)1,339,626,240216,544,320
Size1.2 GB 206.5 MB
Events in quadrant A8,677,8631,351,594
Events in quadrant B9,349,3461,403,577
Events in quadrant C11,038,6181,311,307
Events in quadrant D10,315,0131,277,477

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037136485
B039428406
C044407742
D043059557

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03644
C03642
D03642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0919
B0916
C0917
D0929

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17604280.159055%
B176383662.075065%
C176025783.283718%
D176004252.414773%

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 26104 17732 9 9 0.03% 0.05%
B 26104 17754 131 131 0.50% 0.74%
C 26104 17710 465 465 1.78% 2.63%
D 26104 17743 356 356 1.36% 2.01%

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 596325 1452.47 2067 2033 409.2
A 9 143 64318 152.23 2067 2033 409.2
A 13 254 28277 64.14 2067 2033 409.2
B 5 200 590488 1543.44 2048 1998 381.3
B 0 213 160303 415.19 2048 1998 381.3
B 5 255 129738 335.02 2048 1998 381.3
C 14 254 1479307 3265.55 1964 1978 452.4
C 0 10 1124224 2480.66 1964 1978 452.4
C 15 214 720523 1588.3 1964 1978 452.4
D 12 227 1039400 2186.86 1978 1933 474.4
D 2 250 339666 711.9 1978 1933 474.4
D 13 249 325105 681.21 1978 1933 474.4

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