ASTROSAT CZTI

Data Quality Report

Orbit 24027

Creation date: 2024-06-27T19:01:17.782768
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_165T01_9000003558_24027cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24027cztM0_level2_quad_clean.evt
Size (bytes)443,666,880137,975,040
Size423.1 MB 131.6 MB
Events in quadrant A3,165,886957,808
Events in quadrant B3,261,053972,470
Events in quadrant C3,304,962922,388
Events in quadrant D3,298,168908,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131501
B0133511
C0136346
D0135111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5981520.869420%
B5982450.752257%
C59811312.190269%
D5981611.019896%

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 7261 5982 0 0 0.00% 0.00%
B 7262 5983 1 1 0.01% 0.02%
C 7261 5982 27 27 0.37% 0.45%
D 7261 5982 16 16 0.22% 0.27%

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 3 1 9613 54.65 818 804 161.2
A 13 254 9095 51.44 818 804 161.2
A 0 226 7234 39.89 818 804 161.2
B 0 228 48234 319.41 807 790 148.5
B 0 189 20227 130.86 807 790 148.5
B 12 111 16230 103.95 807 790 148.5
C 14 238 127492 716.51 778 786 176.8
C 0 239 111523 626.2 778 786 176.8
C 7 247 27796 152.74 778 786 176.8
D 8 195 72958 378.33 799 778 190.8
D 1 52 67191 348.1 799 778 190.8
D 13 61 28612 145.89 799 778 190.8

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