ASTROSAT CZTI

Data Quality Report

Orbit 11645

Creation date: 2024-06-27T16:16:21.606410
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/AS1A04_026T04_9000001714_11645cztM0_level2.evt modeM0/AS1A04_026T04_9000001714_11645cztM0_level2_quad_clean.evt
Size (bytes)215,164,80040,008,960
Size205.2 MB 38.2 MB
Events in quadrant A1,484,762271,979
Events in quadrant B1,559,236265,108
Events in quadrant C990,604265,804
Events in quadrant D2,326,734245,461

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059851
B061681
C045331
D085471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2250622.755556%
B22501627.200000%
C225010.044444%
D22501908.444444%

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 2251 2251 24 24 1.07% 1.07%
B 2251 2251 83 83 3.69% 3.69%
C 2251 2251 0 0 0.00% 0.00%
D 2251 2251 124 124 5.51% 5.51%

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 8 5 254567 4772.3 253 248 53.3
A 1 162 83861 1569.0 253 248 53.3
A 1 178 50619 945.21 253 248 53.3
B 4 239 385011 7664.06 251 244 50.2
B 10 16 94226 1872.0 251 244 50.2
B 15 204 65081 1291.47 251 244 50.2
C 13 61 1885 26.55 253 253 61.5
C 3 202 643 6.34 253 253 61.5
C 12 4 620 5.97 253 253 61.5
D 13 137 797697 12951.15 244 236 61.6
D 10 199 186616 3026.9 244 236 61.6
D 10 253 132101 2141.55 244 236 61.6

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