ASTROSAT CZTI

Data Quality Report

Orbit 09757

Creation date: 2024-06-27T15:50:17.013683
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/AS1A03_080T01_9000001392_09757cztM0_level2.evt modeM0/AS1A03_080T01_9000001392_09757cztM0_level2_quad_clean.evt
Size (bytes)490,392,00068,221,440
Size467.7 MB 65.1 MB
Events in quadrant A2,980,493412,464
Events in quadrant B3,128,913411,968
Events in quadrant C2,948,236412,110
Events in quadrant D5,365,540388,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013213178
B013475250
C013221246
D021127901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01304
C01295
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6351560.881751%
B6320651.028481%
C6316470.744142%
D62502233.568000%

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 7538 6430 0 0 0.00% 0.00%
B 7538 6423 0 0 0.00% 0.00%
C 7538 6418 0 0 0.00% 0.00%
D 7538 6394 105 105 1.39% 1.64%

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 0 226 7087 40.58 773 756 156.0
A 12 194 6494 36.78 773 756 156.0
A 13 253 5247 28.78 773 756 156.0
B 0 214 35368 236.66 774 756 146.3
B 0 187 29304 195.19 774 756 146.3
B 0 219 26538 176.28 774 756 146.3
C 13 61 5782 28.91 755 761 173.7
C 12 4 2535 10.21 755 761 173.7
C 14 67 2049 7.41 755 761 173.7
D 1 52 1348130 7558.14 735 719 178.3
D 13 137 1064991 5969.9 735 719 178.3
D 8 195 90325 502.63 735 719 178.3

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