ASTROSAT CZTI

Data Quality Report

Orbit 34787

Creation date: 2024-06-27T21:05:13.396661
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/AS1C07_004T01_9000004990_34787cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34787cztM0_level2_quad_clean.evt
Size (bytes)420,652,80063,613,440
Size401.2 MB 60.7 MB
Events in quadrant A2,481,246393,648
Events in quadrant B3,560,424393,569
Events in quadrant C2,719,590405,058
Events in quadrant D3,633,837378,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103703
B0137352
C0108202
D0141612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5070120.236686%
B50702885.680473%
C5070380.749507%
D5070571.124260%

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 6924 5071 6 6 0.09% 0.12%
B 6924 5071 199 199 2.87% 3.92%
C 6924 5071 26 26 0.38% 0.51%
D 6924 5071 50 50 0.72% 0.99%

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 15 169 56068 450.68 607 597 123.1
A 10 83 47169 378.38 607 597 123.1
A 8 192 16917 132.59 607 597 123.1
B 5 172 964308 8432.85 594 578 114.3
B 5 255 112585 980.09 594 578 114.3
B 4 232 80644 700.6 594 578 114.3
C 15 214 219757 1593.9 594 601 137.5
C 0 10 102104 738.22 594 601 137.5
C 15 159 29708 211.69 594 601 137.5
D 8 195 885716 6086.17 591 577 145.4
D 2 249 235552 1615.68 591 577 145.4
D 14 52 72193 492.43 591 577 145.4

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