ASTROSAT CZTI

Data Quality Report

Orbit 17866

Creation date: 2024-06-27T17:41:50.550227
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/AS1A05_085T01_9000002658_17866cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17866cztM0_level2_quad_clean.evt
Size (bytes)567,829,440100,607,040
Size541.5 MB 95.9 MB
Events in quadrant A3,757,076633,922
Events in quadrant B3,846,426638,996
Events in quadrant C4,088,747612,624
Events in quadrant D4,959,329602,879

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167462
B0167652
C0171662
D0204972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80241551.931705%
B80242132.654536%
C80242513.128116%
D80244735.894816%

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 8614 8026 0 0 0.00% 0.00%
B 8614 8026 1 1 0.01% 0.01%
C 8614 8026 0 0 0.00% 0.00%
D 8614 8025 255 255 2.96% 3.18%

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 0 226 8373 37.37 977 954 198.5
A 3 137 7734 34.15 977 954 198.5
A 12 194 6852 29.71 977 954 198.5
B 12 111 23472 117.78 978 951 191.2
B 11 111 20517 102.33 978 951 191.2
B 14 111 18038 89.36 978 951 191.2
C 3 233 204226 909.52 942 947 223.5
C 14 238 139681 620.73 942 947 223.5
C 5 218 55592 244.5 942 947 223.5
D 12 227 819597 3430.57 934 911 238.6
D 7 238 532281 2226.62 934 911 238.6
D 2 234 35945 146.8 934 911 238.6

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