ASTROSAT CZTI

Data Quality Report

Orbit 25794

Creation date: 2024-06-27T19:21:30.407230
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_068T01_9000003756_25794cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25794cztM0_level2_quad_clean.evt
Size (bytes)519,626,88096,108,480
Size495.6 MB 91.7 MB
Events in quadrant A4,616,041611,399
Events in quadrant B3,294,041663,663
Events in quadrant C3,178,423610,146
Events in quadrant D4,235,034599,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176230
B0135430
C0131990
D0167430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61045468.944954%
B6104550.901048%
C6105851.392301%
D6105741.212121%

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 7469 6105 442 442 5.92% 7.24%
B 7469 6104 1 1 0.01% 0.02%
C 7470 6105 0 0 0.00% 0.00%
D 7470 6106 13 13 0.17% 0.21%

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 0 13 1523276 9455.49 803 789 161.0
A 13 254 8534 48.1 803 789 161.0
A 0 226 7076 39.05 803 789 161.0
B 0 229 29406 185.47 823 806 154.2
B 0 219 22388 139.96 823 806 154.2
B 12 111 17870 110.66 823 806 154.2
C 14 238 127528 706.34 775 781 179.4
C 3 233 23706 127.76 775 781 179.4
C 1 16 5271 25.02 775 781 179.4
D 1 52 991996 5162.66 784 768 192.0
D 7 80 162833 844.09 784 768 192.0
D 8 195 90269 466.15 784 768 192.0

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