ASTROSAT CZTI

Data Quality Report

Orbit 22134

Creation date: 2024-06-27T18:37:16.381706
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_145T01_9000003278_22134cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22134cztM0_level2_quad_clean.evt
Size (bytes)439,004,16098,472,960
Size418.7 MB 93.9 MB
Events in quadrant A3,015,437651,526
Events in quadrant B3,105,779657,890
Events in quadrant C3,096,981627,174
Events in quadrant D3,656,358613,563

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128131
B0130451
C0131301
D0146031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6188711.147382%
B61891111.793505%
C6189961.551139%
D61891532.472128%

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 7118 6189 1 1 0.01% 0.02%
B 7119 6190 9 9 0.13% 0.15%
C 7119 6190 0 0 0.00% 0.00%
D 7119 6190 87 87 1.22% 1.41%

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 5 16 24665 154.04 776 763 155.2
A 13 254 11546 69.49 776 763 155.2
A 0 226 6545 37.26 776 763 155.2
B 3 64 52195 354.93 770 753 144.9
B 4 216 18090 119.62 770 753 144.9
B 12 111 17700 116.93 770 753 144.9
C 14 238 115733 667.89 737 741 172.2
C 9 54 104365 601.87 737 741 172.2
C 13 61 5048 25.02 737 741 172.2
D 1 52 419520 2319.87 750 731 180.5
D 11 176 185864 1025.54 750 731 180.5
D 13 172 109647 603.34 750 731 180.5

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