ASTROSAT CZTI

Data Quality Report

Orbit 15579

Creation date: 2024-06-27T17:10:28.496749
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/AS1A04_198T01_9000002308_15579cztM0_level2.evt modeM0/AS1A04_198T01_9000002308_15579cztM0_level2_quad_clean.evt
Size (bytes)522,861,12079,496,640
Size498.6 MB 75.8 MB
Events in quadrant A3,615,962477,878
Events in quadrant B3,797,400480,896
Events in quadrant C3,755,664466,162
Events in quadrant D4,153,772457,578

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157643
B0161042
C0159262
D0173032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75421522.015381%
B75421912.532485%
C75421471.949085%
D75432212.929869%

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 7768 7544 5 5 0.06% 0.07%
B 7768 7544 9 9 0.12% 0.12%
C 7768 7544 1 1 0.01% 0.01%
D 7769 7547 143 143 1.84% 1.89%

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 13 248 32679 169.34 925 904 187.6
A 3 80 12081 59.57 925 904 187.6
A 9 143 10141 49.23 925 904 187.6
B 0 189 50687 280.51 921 896 177.5
B 5 65 38388 211.22 921 896 177.5
B 4 173 38081 209.49 921 896 177.5
C 3 233 162395 782.32 885 890 206.4
C 14 238 135082 650.01 885 890 206.4
C 13 61 6469 27.02 885 890 206.4
D 1 52 292376 1332.3 897 871 218.8
D 7 223 201404 916.52 897 871 218.8
D 5 51 86536 391.52 897 871 218.8

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