ASTROSAT CZTI

Data Quality Report

Orbit 25711

Creation date: 2024-06-27T19:20:40.447148
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/AS1A09_008T06_9000003748_25711cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25711cztM0_level2_quad_clean.evt
Size (bytes)298,414,08056,122,560
Size284.6 MB 53.5 MB
Events in quadrant A2,087,060364,225
Events in quadrant B2,111,139370,998
Events in quadrant C2,062,878353,090
Events in quadrant D2,499,223325,032

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086770
B087410
C085560
D0101090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B042
C020
D031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39211944.947717%
B39302376.030534%
C39212025.151747%
D38383108.077124%

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 7762 4167 8 8 0.10% 0.19%
B 7825 4172 1 1 0.01% 0.02%
C 7836 4163 0 0 0.00% 0.00%
D 7741 4076 97 97 1.25% 2.38%

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 13 73980 677.56 522 510 108.4
A 13 254 5505 46.07 522 510 108.4
A 3 137 5031 41.69 522 510 108.4
B 0 219 32761 307.26 524 508 105.0
B 12 111 12821 117.3 524 508 105.0
B 0 245 11917 108.68 524 508 105.0
C 14 238 78553 637.55 502 503 122.4
C 3 233 19408 154.43 502 503 122.4
C 8 128 4479 32.48 502 503 122.4
D 7 80 385907 3158.13 471 457 122.1
D 8 195 209133 1709.76 471 457 122.1
D 1 52 82682 673.7 471 457 122.1

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