ASTROSAT CZTI

Data Quality Report

Orbit 23009

Creation date: 2024-06-27T18:48:39.741418
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/AS1A08_004T03_9000003400_23009cztM0_level2.evt modeM0/AS1A08_004T03_9000003400_23009cztM0_level2_quad_clean.evt
Size (bytes)692,591,040129,248,640
Size660.5 MB 123.3 MB
Events in quadrant A4,223,901846,198
Events in quadrant B4,718,337853,934
Events in quadrant C4,839,273810,757
Events in quadrant D6,585,420780,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203191853
B0216781917
C0221741927
D0281402585

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019814
B020321
C020018
D019818

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0193
C0182
D0171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8982981.091071%
B90022152.388358%
C89862222.470510%
D89544454.969846%

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 19534 9091 0 0 0.00% 0.00%
B 19534 9106 66 66 0.34% 0.72%
C 19533 9092 28 28 0.14% 0.31%
D 19533 9066 242 242 1.24% 2.67%

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 11 47 12865 53.53 1092 1067 220.4
A 13 254 12174 50.39 1092 1067 220.4
A 3 137 9677 39.06 1092 1067 220.4
B 4 216 272835 1307.19 1081 1051 207.9
B 5 172 83030 394.29 1081 1051 207.9
B 0 189 46335 217.8 1081 1051 207.9
C 9 15 597852 2423.81 1041 1043 246.2
C 14 238 163535 659.93 1041 1043 246.2
C 7 247 13204 49.39 1041 1043 246.2
D 1 52 1112575 4350.42 1048 1020 255.5
D 12 227 880312 3441.38 1048 1020 255.5
D 13 153 307697 1200.28 1048 1020 255.5

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