ASTROSAT CZTI

Data Quality Report

Orbit 37259

Creation date: 2024-06-27T21:37:31.726635
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/AS1T04_087T01_9000005292_37259cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37259cztM0_level2_quad_clean.evt
Size (bytes)1,055,770,560142,096,320
Size1006.9 MB 135.5 MB
Events in quadrant A8,411,658856,693
Events in quadrant B7,461,431871,949
Events in quadrant C7,225,084837,522
Events in quadrant D7,958,941799,493

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330344
B0305643
C0292595
D0326783

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135775544.080430%
B13577960.707078%
C13576770.567177%
D135772792.054946%

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 19285 13580 413 413 2.14% 3.04%
B 19285 13580 48 48 0.25% 0.35%
C 19285 13580 69 69 0.36% 0.51%
D 19285 13580 213 213 1.10% 1.57%

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 15 237 1499383 4691.09 1609 1583 319.3
A 10 83 550987 1720.72 1609 1583 319.3
A 13 248 67577 206.69 1609 1583 319.3
B 0 213 334105 1089.54 1614 1574 305.2
B 0 190 215037 699.41 1614 1574 305.2
B 0 230 195018 633.82 1614 1574 305.2
C 15 214 569913 1576.94 1556 1565 360.4
C 14 254 419116 1158.54 1556 1565 360.4
C 0 10 153991 422.92 1556 1565 360.4
D 13 249 395941 1041.35 1568 1527 378.8
D 2 153 378070 994.17 1568 1527 378.8
D 1 52 240158 630.05 1568 1527 378.8

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