ASTROSAT CZTI

Data Quality Report

Orbit 30806

Creation date: 2024-06-27T20:19:51.498878
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/AS1C06_003T01_9000004452_30806cztM0_level2.evt modeM0/AS1C06_003T01_9000004452_30806cztM0_level2_quad_clean.evt
Size (bytes)176,996,16030,692,160
Size168.8 MB 29.3 MB
Events in quadrant A1,037,156201,577
Events in quadrant B1,511,864204,691
Events in quadrant C1,438,342189,985
Events in quadrant D1,237,676190,354

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043041
B059711
C056611
D048531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1960924.693878%
B19601809.183673%
C195923111.791730%
D19591186.023481%

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 2585 1960 0 0 0.00% 0.00%
B 2585 1960 0 0 0.00% 0.00%
C 2584 1959 37 37 1.43% 1.89%
D 2584 1960 42 42 1.63% 2.14%

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 12 96 49836 928.29 256 250 53.4
A 13 254 3172 54.7 256 250 53.4
A 3 137 2694 45.75 256 250 53.4
B 6 159 486366 9784.57 250 242 49.7
B 0 190 31274 624.6 250 242 49.7
B 12 111 6155 119.02 250 242 49.7
C 3 233 393391 7076.59 233 232 55.6
C 0 10 81574 1464.1 233 232 55.6
C 14 238 38725 692.85 233 232 55.6
D 8 195 188617 3202.62 241 233 58.8
D 10 253 121447 2060.69 241 233 58.8
D 2 234 6862 112.7 241 233 58.8

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