ASTROSAT CZTI

Data Quality Report

Orbit 48289

Creation date: 2024-09-06T10:39:46.893990
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_029T01_9000006422_48289cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48289cztM0_level2_quad_clean.evt
Size (bytes)507,067,200108,529,920
Size483.6 MB 103.5 MB
Events in quadrant A7,186,180709,277
Events in quadrant B3,519,218748,544
Events in quadrant C3,376,033719,897
Events in quadrant D4,174,422646,159

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261281
B0147571
C0146121
D0169381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66264186.308482%
B66262043.078781%
C66261492.248717%
D66263164.769091%

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 7561 6627 24 24 0.32% 0.36%
B 7561 6627 8 8 0.11% 0.12%
C 7561 6627 35 35 0.46% 0.53%
D 7561 6627 131 131 1.73% 1.98%

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 4102320 25258.23 777 760 162.4
A 13 248 46217 279.93 777 760 162.4
A 0 247 17012 100.08 777 760 162.4
B 0 200 235032 1500.3 785 761 156.1
B 4 21 83314 528.68 785 761 156.1
B 5 255 40987 257.61 785 761 156.1
C 0 207 149323 815.98 771 776 182.0
C 14 254 127796 697.73 771 776 182.0
C 2 207 34462 185.04 771 776 182.0
D 2 165 530013 2728.03 769 746 194.0
D 2 249 425841 2191.09 769 746 194.0
D 7 67 94878 485.19 769 746 194.0

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