ASTROSAT CZTI

Data Quality Report

Orbit 19176

Creation date: 2024-06-27T17:59:46.754602
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_046T01_9000002838_19176cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19176cztM0_level2_quad_clean.evt
Size (bytes)490,461,12075,548,160
Size467.7 MB 72.0 MB
Events in quadrant A3,228,848467,201
Events in quadrant B3,394,351474,784
Events in quadrant C3,595,798459,491
Events in quadrant D4,208,949448,095

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136712
B0141242
C0148092
D0167992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6280651.035032%
B62801071.703822%
C62801131.799363%
D62801822.898089%

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 7450 6280 0 0 0.00% 0.00%
B 7450 6280 8 8 0.11% 0.13%
C 7450 6280 6 6 0.08% 0.10%
D 7450 6280 111 111 1.49% 1.77%

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 11 47 21304 122.89 824 805 166.8
A 11 29 19863 114.25 824 805 166.8
A 8 205 14271 80.73 824 805 166.8
B 7 220 103310 659.88 823 803 155.3
B 4 171 25950 161.88 823 803 155.3
B 0 190 20749 128.4 823 803 155.3
C 3 233 371304 2010.37 792 800 184.3
C 14 238 123926 668.09 792 800 184.3
C 0 207 12402 62.95 792 800 184.3
D 1 52 794377 4132.72 798 777 192.0
D 10 66 304761 1583.01 798 777 192.0
D 9 68 55024 282.49 798 777 192.0

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