ASTROSAT CZTI

Data Quality Report

Orbit 26562

Creation date: 2024-06-27T19:30:29.802344
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/AS1T03_220T01_9000003842_26562cztM0_level2.evt modeM0/AS1T03_220T01_9000003842_26562cztM0_level2_quad_clean.evt
Size (bytes)636,655,68077,037,120
Size607.2 MB 73.5 MB
Events in quadrant A3,444,023492,871
Events in quadrant B4,572,835485,721
Events in quadrant C3,857,155486,917
Events in quadrant D6,988,419434,644

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142600
B0177970
C0156780
D0251200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61901121.809370%
B61913585.782588%
C61911822.939751%
D6190124920.177706%

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 7535 6190 0 0 0.00% 0.00%
B 7536 6191 177 177 2.35% 2.86%
C 7536 6191 3 3 0.04% 0.05%
D 7535 6190 1191 1191 15.81% 19.24%

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 5 168 74877 434.38 868 857 170.4
A 0 13 14320 79.01 868 857 170.4
A 13 254 11163 60.48 868 857 170.4
B 3 64 491642 3170.01 851 832 154.8
B 5 172 357903 2306.22 851 832 154.8
B 0 189 305265 1966.25 851 832 154.8
C 3 233 413376 2168.24 835 843 190.3
C 14 238 136861 714.9 835 843 190.3
C 4 254 35939 184.46 835 843 190.3
D 7 80 2723318 13418.74 771 754 202.9
D 1 52 885854 4362.4 771 754 202.9
D 2 250 347942 1711.19 771 754 202.9

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