ASTROSAT CZTI

Data Quality Report

Orbit 23587

Creation date: 2024-06-27T18:56:30.077082
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/AS1A07_024T04_9000003484_23587cztM0_level2.evt modeM0/AS1A07_024T04_9000003484_23587cztM0_level2_quad_clean.evt
Size (bytes)738,181,440108,397,440
Size704.0 MB 103.4 MB
Events in quadrant A4,333,220673,965
Events in quadrant B4,965,204676,978
Events in quadrant C4,589,954660,183
Events in quadrant D7,854,650643,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187722
B0205582
C0196062
D0294792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9052770.850641%
B90532062.275489%
C90531411.557495%
D90537938.759527%

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 10027 9053 1 1 0.01% 0.01%
B 10028 9054 81 81 0.81% 0.89%
C 10028 9053 0 0 0.00% 0.00%
D 10028 9053 598 598 5.96% 6.61%

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 6 16 83278 370.89 1093 1068 221.7
A 15 174 34904 152.65 1093 1068 221.7
A 13 254 15565 65.4 1093 1068 221.7
B 3 64 497850 2365.08 1083 1055 210.1
B 0 189 86725 407.85 1083 1055 210.1
B 0 245 49032 228.4 1083 1055 210.1
C 10 9 284699 1149.53 1049 1058 246.7
C 14 238 164353 661.79 1049 1058 246.7
C 7 247 41781 165.04 1049 1058 246.7
D 7 223 1822677 7133.84 1037 1006 255.4
D 1 52 1118509 4376.25 1037 1006 255.4
D 9 85 251001 979.0 1037 1006 255.4

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