ASTROSAT CZTI

Data Quality Report

Orbit 34348

Creation date: 2022-02-03T22:19:50.600936
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/AS1A11_047T01_9000004904_34348cztM0_level2.evt modeM0/AS1A11_047T01_9000004904_34348cztM0_level2_quad_clean.evt
Size (bytes)235,851,84034,104,960
Size224.9 MB 32.5 MB
Events in quadrant A983,323255,950
Events in quadrant B1,201,483255,025
Events in quadrant C1,164,727248,621
Events in quadrant D3,664,402135,901

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040591
B047771
C046361
D0121701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187450.266809%
B1874603.201708%
C1874351.867663%
D1874112159.818570%

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 3697 1875 0 0 0.00% 0.00%
B 3697 1875 28 28 0.76% 1.49%
C 3697 1875 20 20 0.54% 1.07%
D 3696 1874 1043 1043 28.22% 55.66%

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 10 83 14992 290.65 249 245 50.7
A 13 6 3953 73.08 249 245 50.7
A 13 254 3106 56.39 249 245 50.7
B 5 172 196323 4146.61 241 236 47.3
B 4 251 23775 497.77 241 236 47.3
B 5 200 12545 260.3 241 236 47.3
C 0 10 121796 2168.19 239 242 56.1
C 15 214 81307 1445.98 239 242 56.1
C 3 233 11424 199.46 239 242 56.1
D 7 223 1327668 31680.79 164 159 41.9
D 10 118 1148297 27400.13 164 159 41.9
D 8 195 172034 4101.77 164 159 41.9

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