ASTROSAT CZTI

Data Quality Report

Orbit 03139

Creation date: 2024-06-27T14:25:07.546866
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/AS1T01_118T01_9000000430_03139cztM0_level2.evt modeM0/AS1T01_118T01_9000000430_03139cztM0_level2_quad_clean.evt
Size (bytes)454,682,88080,167,680
Size433.6 MB 76.5 MB
Events in quadrant A3,117,317499,990
Events in quadrant B3,190,671508,746
Events in quadrant C3,951,663491,975
Events in quadrant D3,077,425482,070

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132683
B0134622
C0157652
D0135232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6370400.627943%
B6370450.706436%
C63702083.265306%
D6370450.706436%

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 7580 6371 0 0 0.00% 0.00%
B 7580 6371 13 13 0.17% 0.20%
C 7580 6371 148 148 1.95% 2.32%
D 7580 6371 16 16 0.21% 0.25%

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 8 15 120527 762.69 768 753 157.0
A 0 31 24670 152.3 768 753 157.0
A 0 226 8385 48.6 768 753 157.0
B 15 204 58284 391.43 778 761 147.0
B 2 249 49218 329.74 778 761 147.0
B 4 81 27011 178.63 778 761 147.0
C 14 234 412186 2361.06 750 756 174.3
C 6 80 256815 1469.44 750 756 174.3
C 14 223 135207 771.57 750 756 174.3
D 2 136 61571 335.19 754 734 181.5
D 5 233 44837 242.99 754 734 181.5
D 13 223 40218 217.54 754 734 181.5

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