ASTROSAT CZTI

Data Quality Report

Orbit 13824

Creation date: 2024-06-27T16:46:34.600655
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_199T01_9000002040_13824cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13824cztM0_level2_quad_clean.evt
Size (bytes)515,848,32071,187,840
Size492.0 MB 67.9 MB
Events in quadrant A3,315,491429,813
Events in quadrant B3,537,781438,675
Events in quadrant C3,313,483422,830
Events in quadrant D4,999,614395,474

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139533
B0145452
C0139872
D0192902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6725620.921933%
B67251161.724907%
C6725480.713755%
D67251402.081784%

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 9306 6727 0 0 0.00% 0.00%
B 9306 6727 13 13 0.14% 0.19%
C 9306 6728 1 1 0.01% 0.01%
D 9306 6728 60 60 0.64% 0.89%

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 1 162 14566 78.65 856 838 174.6
A 0 226 7720 39.43 856 838 174.6
A 12 194 6336 31.5 856 838 174.6
B 10 244 79598 484.18 861 841 162.7
B 4 80 34494 206.89 861 841 162.7
B 4 173 25046 148.81 861 841 162.7
C 3 233 77925 405.01 826 832 190.4
C 4 175 8876 42.26 826 832 190.4
C 13 61 6041 27.37 826 832 190.4
D 10 157 1541552 7784.22 813 791 197.9
D 1 52 125097 628.02 813 791 197.9
D 5 222 102588 514.3 813 791 197.9

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