ASTROSAT CZTI

Data Quality Report

Orbit 25774

Creation date: 2024-06-27T19:21:18.863845
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/AS1A09_147T01_9000003754_25774cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25774cztM0_level2_quad_clean.evt
Size (bytes)1,741,080,960260,231,040
Size1.6 GB 248.2 MB
Events in quadrant A10,368,4891,674,043
Events in quadrant B9,667,8761,698,922
Events in quadrant C9,629,1781,633,321
Events in quadrant D21,713,4001,495,985

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437540
B0411850
C0410640
D0779260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A200232481.238576%
B200232671.333467%
C200243511.752897%
D20024378118.882341%

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 22543 20023 1 1 0.00% 0.00%
B 22543 20023 3 3 0.01% 0.01%
C 22544 20024 4 4 0.02% 0.02%
D 22544 20024 3304 3304 14.66% 16.50%

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 11 29 957265 1959.06 2434 2378 487.4
A 13 254 27549 51.64 2434 2378 487.4
A 3 137 22957 42.22 2434 2378 487.4
B 12 111 57360 118.07 2424 2356 465.9
B 11 111 51843 106.23 2424 2356 465.9
B 0 190 51192 104.83 2424 2356 465.9
C 14 238 374250 682.09 2344 2360 545.2
C 3 233 103237 185.02 2344 2360 545.2
C 10 23 20079 32.5 2344 2360 545.2
D 1 52 4535586 8702.55 2197 2142 520.9
D 7 80 4259684 8172.92 2197 2142 520.9
D 12 2 2784783 5341.65 2197 2142 520.9

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