ASTROSAT CZTI

Data Quality Report

Orbit 24539

Creation date: 2024-06-27T19:07:04.142390
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_183T01_9000003606_24539cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24539cztM0_level2_quad_clean.evt
Size (bytes)522,167,040134,282,880
Size498.0 MB 128.1 MB
Events in quadrant A3,492,892908,328
Events in quadrant B3,756,031919,442
Events in quadrant C3,566,334867,732
Events in quadrant D4,478,179838,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155901
B0162121
C0157321
D0186871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7658430.561504%
B76591341.749576%
C76591281.671236%
D76592593.381643%

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 7838 7659 0 0 0.00% 0.00%
B 7839 7660 30 30 0.38% 0.39%
C 7839 7660 14 14 0.18% 0.18%
D 7839 7660 183 183 2.33% 2.39%

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 12291 63.42 902 883 179.9
A 6 16 9391 47.3 902 883 179.9
A 3 137 8376 41.65 902 883 179.9
B 3 64 192993 1123.65 902 879 171.0
B 12 111 21116 118.36 902 879 171.0
B 11 111 18525 103.21 902 879 171.0
C 14 238 138890 689.68 860 866 200.1
C 2 16 51996 255.49 860 866 200.1
C 5 112 20324 97.23 860 866 200.1
D 9 1 653189 3109.84 859 832 209.8
D 12 218 253825 1206.04 859 832 209.8
D 8 195 124859 591.25 859 832 209.8

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