ASTROSAT CZTI

Data Quality Report

Orbit 14800

Creation date: 2024-06-27T16:59:50.011654
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_022T02_9000002184_14800cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14800cztM0_level2_quad_clean.evt
Size (bytes)442,255,68074,782,080
Size421.8 MB 71.3 MB
Events in quadrant A3,298,058461,247
Events in quadrant B3,156,012461,546
Events in quadrant C3,560,431456,347
Events in quadrant D2,953,070447,597

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140611
B0135161
C0147611
D0133371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269881.403733%
B6269731.164460%
C6269610.973042%
D6269600.957090%

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 6605 6271 20 20 0.30% 0.32%
B 6605 6271 11 11 0.17% 0.18%
C 6605 6271 0 0 0.00% 0.00%
D 6605 6271 27 27 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 15 223 283274 1844.37 747 731 153.2
A 12 189 80245 519.05 747 731 153.2
A 15 239 26480 168.08 747 731 153.2
B 0 229 65254 450.73 748 729 143.2
B 0 190 20340 136.99 748 729 143.2
B 3 209 20272 136.52 748 729 143.2
C 3 233 726231 4321.74 721 721 167.9
C 8 128 9348 51.39 721 721 167.9
C 8 112 7381 39.67 721 721 167.9
D 15 0 123481 672.17 721 700 182.7
D 2 120 25623 136.44 721 700 182.7
D 2 234 23706 125.95 721 700 182.7

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