ASTROSAT CZTI

Data Quality Report

Orbit 31988

Creation date: 2024-06-27T20:34:51.833155
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/AS1A10_058T12_9000004674_31988cztM0_level2.evt modeM0/AS1A10_058T12_9000004674_31988cztM0_level2_quad_clean.evt
Size (bytes)974,776,320163,952,640
Size929.6 MB 156.4 MB
Events in quadrant A5,959,8821,072,787
Events in quadrant B9,439,7641,062,676
Events in quadrant C6,723,4441,007,964
Events in quadrant D6,600,3921,004,710

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246493
B0366893
C0272084
D0268603

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11820640.541455%
B118212462.081042%
C118203222.724196%
D11820520.439932%

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 14120 11820 0 0 0.00% 0.00%
B 14121 11821 74 74 0.52% 0.63%
C 14120 11820 54 54 0.38% 0.46%
D 14120 11820 17 17 0.12% 0.14%

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 21754 66.47 1542 1516 304.5
A 3 137 15394 45.58 1542 1516 304.5
A 0 226 12875 37.31 1542 1516 304.5
B 6 159 3016891 10642.46 1504 1470 283.3
B 10 245 351280 1234.6 1504 1470 283.3
B 0 190 67021 231.35 1504 1470 283.3
C 10 22 446755 1336.95 1439 1452 333.1
C 14 238 273068 815.48 1439 1452 333.1
C 3 233 138642 411.89 1439 1452 333.1
D 8 195 654034 1890.14 1474 1436 345.3
D 7 238 142343 408.11 1474 1436 345.3
D 12 233 96883 276.45 1474 1436 345.3

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