ASTROSAT CZTI

Data Quality Report

Orbit 20907

Creation date: 2024-06-27T18:21:01.055498
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/AS1A06_002T03_9000003080_20907cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20907cztM0_level2_quad_clean.evt
Size (bytes)648,535,68096,295,680
Size618.5 MB 91.8 MB
Events in quadrant A3,382,807630,591
Events in quadrant B3,827,254625,882
Events in quadrant C3,718,619606,423
Events in quadrant D8,238,267564,611

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146911
B0159071
C0156901
D0292261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7011390.556269%
B70121041.483172%
C70122443.479749%
D701277110.995436%

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 7421 7012 5 5 0.07% 0.07%
B 7422 7013 28 28 0.38% 0.40%
C 7422 7013 134 134 1.81% 1.91%
D 7422 7013 887 887 11.95% 12.65%

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 5 16 58119 333.57 846 827 171.8
A 6 16 55833 320.26 846 827 171.8
A 15 174 17217 95.43 846 827 171.8
B 7 220 295594 1834.7 838 817 160.7
B 0 228 61960 380.55 838 817 160.7
B 0 190 41900 255.7 838 817 160.7
C 9 54 450288 2395.28 799 803 187.7
C 14 238 124553 659.46 799 803 187.7
C 0 207 11234 55.59 799 803 187.7
D 1 52 4554652 23420.4 802 780 194.4
D 1 239 513000 2634.33 802 780 194.4
D 7 38 88343 450.33 802 780 194.4

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