ASTROSAT CZTI

Data Quality Report

Orbit 07676

Creation date: 2024-06-27T15:22:36.210095
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/AS1A02_029T01_9000001058_07676cztM0_level2.evt modeM0/AS1A02_029T01_9000001058_07676cztM0_level2_quad_clean.evt
Size (bytes)907,974,72069,776,640
Size865.9 MB 66.5 MB
Events in quadrant A3,385,088442,087
Events in quadrant B3,678,447447,249
Events in quadrant C14,747,232301,033
Events in quadrant D5,194,210413,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150362
B0157461
C0488171
D0204991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72971181.617103%
B72972122.905304%
C7297512070.165822%
D72975046.906948%

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 7462 7299 0 0 0.00% 0.00%
B 7462 7299 38 38 0.51% 0.52%
C 7461 7297 4162 4162 55.78% 57.04%
D 7462 7299 308 308 4.13% 4.22%

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 8620 43.36 873 852 179.2
A 15 174 8344 41.82 873 852 179.2
A 12 194 7958 39.66 873 852 179.2
B 4 239 166381 987.83 870 848 167.6
B 4 173 69486 409.6 870 848 167.6
B 0 219 27311 157.92 870 848 167.6
C 9 68 12287075 84057.14 624 627 146.2
C 8 208 8139 51.39 624 627 146.2
C 12 4 6825 42.4 624 627 146.2
D 2 152 867866 4198.47 833 805 206.5
D 1 83 487128 2354.87 833 805 206.5
D 13 104 261511 1262.39 833 805 206.5

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