ASTROSAT CZTI

Data Quality Report

Orbit 14865

Creation date: 2024-06-27T17:00:37.933229
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_218T01_9000002194_14865cztM0_level2.evt modeM0/AS1A04_218T01_9000002194_14865cztM0_level2_quad_clean.evt
Size (bytes)538,657,920101,378,880
Size513.7 MB 96.7 MB
Events in quadrant A3,430,833677,240
Events in quadrant B3,809,749666,410
Events in quadrant C3,448,918661,805
Events in quadrant D5,201,834630,277

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140013
B0155072
C0141362
D0194312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6228951.525369%
B62281492.392421%
C6228851.364804%
D622870911.384072%

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 7554 6230 0 0 0.00% 0.00%
B 7554 6230 29 29 0.38% 0.47%
C 7554 6230 0 0 0.00% 0.00%
D 7554 6230 502 502 6.65% 8.06%

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 12 189 64089 363.88 872 856 173.8
A 15 239 11940 63.78 872 856 173.8
A 0 226 7919 40.64 872 856 173.8
B 0 219 195390 1220.15 851 832 159.5
B 0 189 74243 460.39 851 832 159.5
B 3 64 61506 380.51 851 832 159.5
C 3 233 179142 937.63 836 842 190.2
C 6 96 7760 36.38 836 842 190.2
C 13 61 5990 27.07 836 842 190.2
D 7 254 1194335 6137.62 800 783 194.5
D 13 104 870439 4472.04 800 783 194.5
D 13 172 46304 234.08 800 783 194.5

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