ASTROSAT CZTI

Data Quality Report

Orbit 17681

Creation date: 2024-06-27T17:39:27.867196
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/AS1C04_009T02_9000002618_17681cztM0_level2.evt modeM0/AS1C04_009T02_9000002618_17681cztM0_level2_quad_clean.evt
Size (bytes)114,042,24028,463,040
Size108.8 MB 27.1 MB
Events in quadrant A723,155194,454
Events in quadrant B941,580194,678
Events in quadrant C795,480182,819
Events in quadrant D889,859179,358

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030202
B037541
C032091
D035671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148430.202156%
B1484382.560647%
C1484181.212938%
D1484493.301887%

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 1484 1484 0 0 0.00% 0.00%
B 1484 1484 20 20 1.35% 1.35%
C 1484 1484 0 0 0.00% 0.00%
D 1484 1484 29 29 1.95% 1.95%

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 0 226 1660 36.79 187 184 40.1
A 12 194 1459 31.78 187 184 40.1
A 3 137 1367 29.49 187 184 40.1
B 7 220 123855 3279.96 187 182 37.7
B 4 142 22542 593.01 187 182 37.7
B 0 198 11099 289.53 187 182 37.7
C 3 233 48141 1083.47 182 182 44.3
C 14 238 27737 622.51 182 182 44.3
C 5 218 9154 202.69 182 182 44.3
D 12 233 103976 2261.42 184 178 45.9
D 5 32 29629 641.64 184 178 45.9
D 10 70 17985 387.96 184 178 45.9

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