ASTROSAT CZTI

Data Quality Report

Orbit 18778

Creation date: 2024-06-27T17:55:03.718399
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_088T03_9000002808_18778cztM0_level2.evt modeM0/AS1A05_088T03_9000002808_18778cztM0_level2_quad_clean.evt
Size (bytes)419,241,60074,246,400
Size399.8 MB 70.8 MB
Events in quadrant A3,051,646457,423
Events in quadrant B3,122,682464,173
Events in quadrant C2,913,550455,503
Events in quadrant D3,196,491447,471

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131181
B0133551
C0126371
D0135581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6070721.186161%
B60701021.680395%
C60691191.960784%
D6069420.692042%

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 6365 6071 21 21 0.33% 0.35%
B 6365 6071 9 9 0.14% 0.15%
C 6364 6070 5 5 0.08% 0.08%
D 6364 6070 16 16 0.25% 0.26%

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 6 16 192724 1270.23 739 725 151.2
A 13 254 10835 66.89 739 725 151.2
A 0 226 6555 38.57 739 725 151.2
B 7 220 154234 1081.77 734 716 141.9
B 0 229 58978 410.55 734 716 141.9
B 0 197 18780 127.29 734 716 141.9
C 14 238 111459 668.85 706 711 165.6
C 0 207 33298 196.81 706 711 165.6
C 5 112 10530 59.3 706 711 165.6
D 1 52 390963 2218.54 717 696 175.9
D 14 34 40773 227.82 717 696 175.9
D 2 234 31990 177.9 717 696 175.9

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