ASTROSAT CZTI

Data Quality Report

Orbit 24471

Creation date: 2024-06-27T19:06:20.151781
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/AS1T03_183T01_9000003606_24471cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24471cztM0_level2_quad_clean.evt
Size (bytes)524,914,560113,155,200
Size500.6 MB 107.9 MB
Events in quadrant A3,428,761735,195
Events in quadrant B3,519,930751,010
Events in quadrant C3,848,601719,518
Events in quadrant D4,587,598696,292

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152841
B0153421
C0162661
D0186871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7540640.848806%
B7541650.861955%
C75411632.161517%
D75411461.936083%

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 8125 7541 2 2 0.02% 0.03%
B 8126 7542 0 0 0.00% 0.00%
C 8126 7542 39 39 0.48% 0.52%
D 8126 7542 66 66 0.81% 0.88%

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 4 2 17567 93.7 882 862 178.3
A 13 254 12177 63.47 882 862 178.3
A 3 137 8132 40.78 882 862 178.3
B 7 202 29134 167.37 879 854 169.0
B 15 33 20694 117.42 879 854 169.0
B 12 111 20641 117.11 879 854 169.0
C 2 16 353460 1771.11 852 855 199.1
C 14 238 134845 673.02 852 855 199.1
C 3 233 35511 174.07 852 855 199.1
D 9 35 573897 2738.59 858 832 209.3
D 12 218 308395 1469.79 858 832 209.3
D 1 52 213166 1014.71 858 832 209.3

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