ASTROSAT CZTI

Data Quality Report

Orbit 09286

Creation date: 2024-06-27T15:43:55.187281
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/AS1G07_077T01_9000001306_09286cztM0_level2.evt modeM0/AS1G07_077T01_9000001306_09286cztM0_level2_quad_clean.evt
Size (bytes)345,234,24045,034,560
Size329.2 MB 42.9 MB
Events in quadrant A2,755,654274,609
Events in quadrant B1,930,209280,766
Events in quadrant C1,804,129276,339
Events in quadrant D3,690,777247,349

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01101218
B0847412
C083177
D01375826

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0842
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40232025.021129%
B40231674.151131%
C40251112.757764%
D402363115.684812%

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 4293 4029 18 18 0.42% 0.45%
B 4293 4029 2 2 0.05% 0.05%
C 4293 4029 0 0 0.00% 0.00%
D 4293 4029 447 447 10.41% 11.09%

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 866551 8985.02 464 452 96.4
A 1 162 37178 381.0 464 452 96.4
A 13 251 30870 315.56 464 452 96.4
B 0 214 52429 569.66 467 454 91.2
B 0 219 18542 198.25 467 454 91.2
B 8 234 18126 193.69 467 454 91.2
C 14 234 11164 100.91 455 455 106.1
C 8 128 5670 49.14 455 455 106.1
C 14 67 3835 31.85 455 455 106.1
D 1 52 1656453 15697.69 427 415 105.5
D 12 233 277825 2629.59 427 415 105.5
D 7 71 83923 791.58 427 415 105.5

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