ASTROSAT CZTI

Data Quality Report

Orbit 23899

Creation date: 2024-06-27T18:59:53.938334
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_142T01_9000003540_23899cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23899cztM0_level2_quad_clean.evt
Size (bytes)583,070,40075,150,720
Size556.1 MB 71.7 MB
Events in quadrant A3,386,501479,243
Events in quadrant B3,446,402483,077
Events in quadrant C3,514,291448,733
Events in quadrant D6,885,604426,540

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138832
B0139842
C0141372
D0246142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62641051.676245%
B62651211.931365%
C62652043.256185%
D6265168026.815642%

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 7544 6265 0 0 0.00% 0.00%
B 7545 6266 2 2 0.03% 0.03%
C 7545 6266 41 41 0.54% 0.65%
D 7545 6265 972 972 12.88% 15.51%

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 10383 54.63 878 863 174.3
A 0 226 7715 39.32 878 863 174.3
A 3 137 7003 35.23 878 863 174.3
B 12 111 18206 107.3 873 856 161.7
B 11 111 16131 94.47 873 856 161.7
B 0 189 14602 85.01 873 856 161.7
C 0 10 162626 860.19 816 824 188.1
C 14 238 131983 697.29 816 824 188.1
C 7 247 34933 181.34 816 824 188.1
D 12 218 3398754 20126.25 696 677 168.8
D 12 250 260958 1541.6 696 677 168.8
D 12 202 161516 952.62 696 677 168.8

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