ASTROSAT CZTI

Data Quality Report

Orbit 23647

Creation date: 2024-06-27T18:57:09.758554
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_147T01_9000003490_23647cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23647cztM0_level2_quad_clean.evt
Size (bytes)1,403,850,240235,690,560
Size1.3 GB 224.8 MB
Events in quadrant A8,880,9791,491,224
Events in quadrant B12,353,7451,490,945
Events in quadrant C9,135,4921,456,443
Events in quadrant D10,899,6371,428,847

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039416
B039220
C039313
D039117

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400571715
B0512702689
C0404091722
D0473792284

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184782731.477433%
B1840112466.771371%
C184733972.149082%
D184145262.856522%

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 35303 18651 0 0 0.00% 0.00%
B 35303 18551 613 613 1.74% 3.30%
C 35303 18649 3 3 0.01% 0.02%
D 35302 18586 229 229 0.65% 1.23%

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 30906 61.69 2302 2250 464.5
A 3 137 20789 39.91 2302 2250 464.5
A 0 226 20023 38.26 2302 2250 464.5
B 3 64 2792107 6453.71 2240 2186 432.3
B 0 229 370441 851.85 2240 2186 432.3
B 0 189 255760 586.57 2240 2186 432.3
C 14 238 344833 661.68 2215 2232 517.8
C 7 247 47859 88.12 2215 2232 517.8
C 10 91 41774 76.37 2215 2232 517.8
D 1 52 678902 1240.53 2231 2162 545.5
D 9 85 549912 1004.08 2231 2162 545.5
D 7 238 475575 867.81 2231 2162 545.5

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