ASTROSAT CZTI

Data Quality Report

Orbit 20440

Creation date: 2024-06-27T18:15:35.921617
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/AS1C04_009T06_9000003020_20440cztM0_level2.evt modeM0/AS1C04_009T06_9000003020_20440cztM0_level2_quad_clean.evt
Size (bytes)60,592,32020,269,440
Size57.8 MB 19.3 MB
Events in quadrant A446,716134,881
Events in quadrant B458,095135,801
Events in quadrant C446,785131,902
Events in quadrant D410,591132,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020670
B020510
C020480
D020450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A102220.195695%
B102220.195695%
C102210.097847%
D102200.000000%

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 1022 1022 2 2 0.20% 0.20%
B 1022 1022 0 0 0.00% 0.00%
C 1022 1022 0 0 0.00% 0.00%
D 1022 1022 0 0 0.00% 0.00%

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 5 16 10123 414.29 112 110 24.2
A 12 16 2195 86.27 112 110 24.2
A 10 253 1173 43.98 112 110 24.2
B 0 219 13099 549.84 113 111 23.6
B 12 111 2596 105.2 113 111 23.6
B 11 111 2213 88.99 113 111 23.6
C 14 238 17202 629.99 109 109 27.1
C 3 233 1171 39.14 109 109 27.1
C 9 221 846 27.16 109 109 27.1
D 2 234 3382 116.46 108 105 28.1
D 13 153 1090 35.01 108 105 28.1
D 14 226 1023 32.62 108 105 28.1

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