ASTROSAT CZTI

Data Quality Report

Orbit 20268

Creation date: 2024-06-27T18:13:16.086697
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/AS1A05_175T01_9000003004_20268cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20268cztM0_level2_quad_clean.evt
Size (bytes)537,416,64098,700,480
Size512.5 MB 94.1 MB
Events in quadrant A4,161,006626,503
Events in quadrant B4,121,186633,460
Events in quadrant C3,569,814608,471
Events in quadrant D3,917,335601,660

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170462
B0168932
C0153463
D0165802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74612593.471385%
B74612182.921860%
C74601301.742627%
D74601271.702413%

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 7891 7462 97 97 1.23% 1.30%
B 7891 7462 77 77 0.98% 1.03%
C 7890 7461 0 0 0.00% 0.00%
D 7890 7461 32 32 0.41% 0.43%

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 14 238 433362 2350.78 908 887 184.0
A 4 2 125185 675.64 908 887 184.0
A 14 254 34502 182.72 908 887 184.0
B 4 142 354140 2065.54 906 883 171.0
B 7 220 134185 779.44 906 883 171.0
B 12 111 21319 119.49 906 883 171.0
C 14 238 136903 665.43 873 876 204.4
C 0 207 10870 48.89 873 876 204.4
C 3 9 10099 45.12 873 876 204.4
D 1 52 214512 980.68 890 863 217.9
D 11 176 147606 673.57 890 863 217.9
D 7 238 96669 439.76 890 863 217.9

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