ASTROSAT CZTI

Data Quality Report

Orbit 23634

Creation date: 2024-06-27T18:57:01.566752
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_147T01_9000003490_23634cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23634cztM0_level2_quad_clean.evt
Size (bytes)480,458,880100,454,400
Size458.2 MB 95.8 MB
Events in quadrant A3,161,395653,594
Events in quadrant B3,612,580671,359
Events in quadrant C3,300,707643,294
Events in quadrant D4,032,624618,591

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136692
B0151242
C0139782
D0165872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6524220.337216%
B6525640.980843%
C6525620.950192%
D65252023.095785%

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 7634 6525 2 2 0.03% 0.03%
B 7635 6525 19 19 0.25% 0.29%
C 7635 6525 0 0 0.00% 0.00%
D 7635 6526 157 157 2.06% 2.41%

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 12 96 20160 116.63 815 801 166.0
A 13 254 10253 56.95 815 801 166.0
A 3 137 7292 39.11 815 801 166.0
B 3 64 186069 1167.07 822 801 158.7
B 0 230 102994 643.75 822 801 158.7
B 0 229 37274 229.76 822 801 158.7
C 14 238 124646 666.13 792 797 185.9
C 7 247 64406 342.13 792 797 185.9
C 10 91 10638 52.93 792 797 185.9
D 9 85 432229 2249.52 784 761 191.8
D 12 233 279442 1452.94 784 761 191.8
D 9 35 155173 805.05 784 761 191.8

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