ASTROSAT CZTI

Data Quality Report

Orbit 15380

Creation date: 2024-06-27T17:07:35.582668
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/AS1G08_035T01_9000002268_15380cztM0_level2.evt modeM0/AS1G08_035T01_9000002268_15380cztM0_level2_quad_clean.evt
Size (bytes)1,141,539,840159,324,480
Size1.1 GB 151.9 MB
Events in quadrant A10,149,140928,614
Events in quadrant B9,056,468980,154
Events in quadrant C6,587,334995,013
Events in quadrant D7,818,725940,029

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397192
B0361722
C0287802
D0331472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14211149510.520020%
B142116044.250229%
C14211570.401098%
D142112231.569207%

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 15477 14213 916 916 5.92% 6.44%
B 15477 14213 386 386 2.49% 2.72%
C 15477 14214 0 0 0.00% 0.00%
D 15477 14213 175 175 1.13% 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 14 238 3411815 10707.15 1567 1530 318.5
A 14 237 636087 1992.3 1567 1530 318.5
A 9 143 52105 158.79 1567 1530 318.5
B 10 245 1302788 4194.21 1633 1589 310.2
B 10 16 924654 2975.36 1633 1589 310.2
B 0 229 118882 378.08 1633 1589 310.2
C 3 233 326310 876.21 1605 1611 370.6
C 13 61 11547 26.81 1605 1611 370.6
C 7 247 4559 7.96 1605 1611 370.6
D 2 33 465662 1189.66 1594 1544 390.1
D 5 222 387398 989.05 1594 1544 390.1
D 1 255 336852 859.48 1594 1544 390.1

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