ASTROSAT CZTI

Data Quality Report

Orbit 15580

Creation date: 2024-06-27T17:10:29.503737
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/AS1A04_198T01_9000002308_15580cztM0_level2.evt modeM0/AS1A04_198T01_9000002308_15580cztM0_level2_quad_clean.evt
Size (bytes)590,126,40087,958,080
Size562.8 MB 83.9 MB
Events in quadrant A3,768,077541,587
Events in quadrant B3,936,568546,458
Events in quadrant C3,835,239525,172
Events in quadrant D5,798,392503,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164623
B0168042
C0164372
D0224732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78731862.362505%
B78732072.629239%
C78731872.375206%
D78735957.557475%

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 8469 7874 5 5 0.06% 0.06%
B 8469 7874 2 2 0.02% 0.03%
C 8469 7875 3 3 0.04% 0.04%
D 8469 7877 440 440 5.20% 5.59%

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 9 143 32587 159.46 968 946 198.4
A 13 248 9124 41.21 968 946 198.4
A 0 226 8704 39.1 968 946 198.4
B 0 189 79655 422.04 962 934 186.5
B 12 111 21313 109.25 962 934 186.5
B 0 197 18898 96.31 962 934 186.5
C 14 238 140912 645.56 921 925 216.8
C 3 233 70698 321.77 921 925 216.8
C 10 22 14934 64.6 921 925 216.8
D 1 52 1975161 8768.16 919 890 225.2
D 12 110 102026 449.17 919 890 225.2
D 15 0 85280 374.79 919 890 225.2

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