ASTROSAT CZTI

Data Quality Report

Orbit 30989

Creation date: 2024-06-27T20:21:59.388806
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/AS1A10_071T48_9000004478_30989cztM0_level2.evt modeM0/AS1A10_071T48_9000004478_30989cztM0_level2_quad_clean.evt
Size (bytes)593,795,52094,659,840
Size566.3 MB 90.3 MB
Events in quadrant A3,235,882648,494
Events in quadrant B6,731,574562,772
Events in quadrant C4,131,318607,863
Events in quadrant D3,454,532603,985

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136572
B0243592
C0163822
D0144902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6346480.756382%
B634699215.631894%
C63452644.160757%
D6345410.646178%

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 7601 6347 0 0 0.00% 0.00%
B 7601 6346 665 665 8.75% 10.48%
C 7600 6345 116 116 1.53% 1.83%
D 7600 6345 17 17 0.22% 0.27%

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 13 254 12655 70.96 838 823 166.8
A 3 137 7811 41.91 838 823 166.8
A 0 226 7210 38.3 838 823 166.8
B 6 159 1768380 12396.88 765 749 142.6
B 5 172 1728433 12116.73 765 749 142.6
B 4 80 67573 468.66 765 749 142.6
C 0 10 784211 4275.25 792 798 183.2
C 14 238 128944 699.32 792 798 183.2
C 3 233 90640 490.29 792 798 183.2
D 8 195 206249 1082.04 806 788 189.9
D 2 250 47211 244.48 806 788 189.9
D 13 249 39496 203.85 806 788 189.9

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