ASTROSAT CZTI

Data Quality Report

Orbit 22904

Creation date: 2024-06-27T18:47:19.103923
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/AS1A08_009T01_9000003382_22904cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22904cztM0_level2_quad_clean.evt
Size (bytes)564,194,88087,284,160
Size538.1 MB 83.2 MB
Events in quadrant A3,250,311555,475
Events in quadrant B3,324,915563,552
Events in quadrant C3,192,291539,400
Events in quadrant D6,846,009498,909

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143381
B0144141
C0141821
D0251721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6969971.391878%
B69701151.649928%
C69701301.865136%
D6970116916.771879%

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 7274 6970 0 0 0.00% 0.00%
B 7275 6971 4 4 0.05% 0.06%
C 7275 6971 0 0 0.00% 0.00%
D 7275 6971 931 931 12.80% 13.36%

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 13 170 48784 285.82 826 808 167.9
A 13 252 13014 72.72 826 808 167.9
A 13 254 12027 66.84 826 808 167.9
B 3 64 49333 313.15 816 794 155.0
B 0 189 20262 125.59 816 794 155.0
B 0 190 19505 120.71 816 794 155.0
C 14 238 124564 673.81 784 787 183.7
C 7 247 10620 53.53 784 787 183.7
C 13 61 5471 25.5 784 787 183.7
D 1 239 3755846 20390.34 753 729 184.2
D 13 153 120160 648.51 753 729 184.2
D 1 52 55734 298.68 753 729 184.2

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