ASTROSAT CZTI

Data Quality Report

Orbit 24652

Creation date: 2024-06-27T19:08:23.440697
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_191T01_9000003618_24652cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24652cztM0_level2_quad_clean.evt
Size (bytes)447,744,960133,188,480
Size427.0 MB 127.0 MB
Events in quadrant A3,131,247933,010
Events in quadrant B3,225,617924,043
Events in quadrant C3,272,750866,530
Events in quadrant D3,502,731871,581

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131811
B0135551
C0136561
D0145231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6291991.573677%
B62911131.796217%
C62911201.907487%
D6291831.319345%

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 7476 6291 0 0 0.00% 0.00%
B 7476 6292 3 3 0.04% 0.05%
C 7476 6291 3 3 0.04% 0.05%
D 7476 6292 18 18 0.24% 0.29%

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 13 254 10769 61.81 811 797 161.3
A 0 226 7063 38.84 811 797 161.3
A 3 137 6993 38.41 811 797 161.3
B 5 172 66570 442.57 792 772 148.7
B 0 190 34624 227.69 792 772 148.7
B 12 111 17496 112.49 792 772 148.7
C 7 247 176251 1021.64 750 756 171.8
C 14 238 123367 713.78 750 756 171.8
C 2 16 26662 150.81 750 756 171.8
D 8 195 267182 1450.73 775 751 183.7
D 12 235 103870 561.49 775 751 183.7
D 1 52 80518 434.34 775 751 183.7

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