ASTROSAT CZTI

Data Quality Report

Orbit 16573

Creation date: 2024-06-27T17:24:34.173284
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_020T01_9000002444_16573cztM0_level2.evt modeM0/AS1T03_020T01_9000002444_16573cztM0_level2_quad_clean.evt
Size (bytes)499,484,160110,589,120
Size476.3 MB 105.5 MB
Events in quadrant A2,981,402778,582
Events in quadrant B3,440,884801,588
Events in quadrant C4,042,324747,053
Events in quadrant D4,248,805597,071

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128423
B0141772
C0162742
D0168522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6079520.855404%
B60791181.941109%
C60791412.319460%
D6079144623.786807%

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 7410 6081 0 0 0.00% 0.00%
B 7410 6081 11 11 0.15% 0.18%
C 7410 6081 1 1 0.01% 0.02%
D 7410 6079 353 353 4.76% 5.81%

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 2 79 30485 193.07 763 749 154.0
A 9 143 12893 78.85 763 749 154.0
A 0 226 6764 39.05 763 749 154.0
B 15 35 227133 1598.86 772 756 141.6
B 0 197 55777 388.6 772 756 141.6
B 0 85 32020 220.81 772 756 141.6
C 3 233 1059920 6293.19 730 736 168.3
C 14 238 116721 689.13 730 736 168.3
C 7 247 15702 88.92 730 736 168.3
D 2 33 823060 5433.64 624 606 151.4
D 1 52 584394 3856.86 624 606 151.4
D 10 70 277778 1831.17 624 606 151.4

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