ASTROSAT CZTI

Data Quality Report

Orbit 12442

Creation date: 2024-06-27T16:27:26.219769
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_174T01_9000001850_12442cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12442cztM0_level2_quad_clean.evt
Size (bytes)583,827,84087,554,880
Size556.8 MB 83.5 MB
Events in quadrant A7,023,772542,746
Events in quadrant B3,651,365559,702
Events in quadrant C3,023,735569,084
Events in quadrant D3,556,994540,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253482
B0147511
C0131781
D0148271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62893365.342662%
B62892473.927492%
C6289520.826841%
D62891692.687232%

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 7195 6290 84 84 1.17% 1.34%
B 7195 6290 120 120 1.67% 1.91%
C 7195 6290 10 10 0.14% 0.16%
D 7195 6290 116 116 1.61% 1.84%

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 0 23 2601209 16979.17 745 731 153.2
A 13 251 985736 6431.34 745 731 153.2
A 0 226 188113 1223.46 745 731 153.2
B 4 239 410674 2862.3 746 730 143.2
B 0 219 135544 941.29 746 730 143.2
B 3 64 120098 833.45 746 730 143.2
C 15 208 140959 821.84 739 747 170.6
C 13 61 5416 27.37 739 747 170.6
C 14 234 2304 9.13 739 747 170.6
D 1 52 408857 2303.32 734 716 177.2
D 13 104 157188 883.04 734 716 177.2
D 13 249 85824 480.3 734 716 177.2

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