ASTROSAT CZTI

Data Quality Report

Orbit 07581

Creation date: 2024-06-27T15:21:15.703338
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/AS1A02_024T01_9000001044_07581cztM0_level2.evt modeM0/AS1A02_024T01_9000001044_07581cztM0_level2_quad_clean.evt
Size (bytes)2,075,385,600328,752,000
Size1.9 GB 313.5 MB
Events in quadrant A15,667,8811,998,523
Events in quadrant B13,410,4262,049,527
Events in quadrant C14,607,0572,020,942
Events in quadrant D17,251,9471,935,946

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05780
B05780
C05780
D05780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0655086
B0585925
C0623325
D0706015

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A283885732.018459%
B283883301.162463%
C283883461.218825%
D283889943.501479%

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 32238 28390 197 197 0.61% 0.69%
B 32238 28393 3 3 0.01% 0.01%
C 32238 28393 78 78 0.24% 0.27%
D 32238 28391 625 625 1.94% 2.20%

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 15 239 2054464 3032.48 3346 3277 676.4
A 0 128 718513 1057.41 3346 3277 676.4
A 3 1 40727 55.37 3346 3277 676.4
B 0 219 149661 228.56 3373 3285 640.4
B 0 214 118651 180.14 3373 3285 640.4
B 12 111 69603 103.55 3373 3285 640.4
C 9 68 1488631 1961.15 3262 3272 757.4
C 8 229 240530 313.26 3262 3272 757.4
C 1 16 111839 143.34 3262 3272 757.4
D 2 152 2643258 3326.72 3238 3134 793.6
D 2 14 966902 1214.41 3238 3134 793.6
D 5 233 625160 783.79 3238 3134 793.6

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