ASTROSAT CZTI

Data Quality Report

Orbit 21949

Creation date: 2024-06-27T18:34:23.641730
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/AS1A07_007T02_9000003244_21949cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21949cztM0_level2_quad_clean.evt
Size (bytes)582,955,200125,853,120
Size555.9 MB 120.0 MB
Events in quadrant A3,984,391813,404
Events in quadrant B4,213,600827,564
Events in quadrant C4,097,187806,177
Events in quadrant D4,778,853770,093

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175982
B0181582
C0177862
D0201112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8557310.362276%
B8558680.794578%
C8557991.156948%
D85572613.050134%

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 9112 8560 0 0 0.00% 0.00%
B 9113 8561 10 10 0.11% 0.12%
C 9112 8560 0 0 0.00% 0.00%
D 9112 8560 238 238 2.61% 2.78%

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 13 254 14564 65.21 1032 1007 207.9
A 3 137 9212 39.46 1032 1007 207.9
A 0 226 8669 36.85 1032 1007 207.9
B 3 64 78151 389.36 1033 1003 198.1
B 0 230 45148 222.8 1033 1003 198.1
B 12 111 24591 119.05 1033 1003 198.1
C 14 238 157376 655.85 1008 1014 238.4
C 9 54 10235 38.68 1008 1014 238.4
C 13 61 6999 25.1 1008 1014 238.4
D 13 174 740187 3056.14 1001 972 241.9
D 1 52 159260 654.41 1001 972 241.9
D 2 136 47403 191.96 1001 972 241.9

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