ASTROSAT CZTI

Data Quality Report

Orbit 13516

Creation date: 2024-06-27T16:41:56.982056
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/AS1T02_020T01_9000001990_13516cztM0_level2.evt modeM0/AS1T02_020T01_9000001990_13516cztM0_level2_quad_clean.evt
Size (bytes)1,004,391,360198,789,120
Size957.9 MB 189.6 MB
Events in quadrant A6,799,3921,266,738
Events in quadrant B9,052,1531,365,691
Events in quadrant C6,689,3291,247,917
Events in quadrant D6,923,8741,167,349

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297574
B0363063
C0288163
D0301663

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14103790.560165%
B141033692.616465%
C14103470.333262%
D14103410.290718%

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 15384 14106 6 6 0.04% 0.04%
B 15384 14106 142 142 0.92% 1.01%
C 15384 14105 6 6 0.04% 0.04%
D 15384 14105 5 5 0.03% 0.04%

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 261894 769.79 1664 1628 338.1
A 8 15 91569 266.02 1664 1628 338.1
A 1 162 27227 75.71 1664 1628 338.1
B 3 64 2241307 6908.74 1693 1651 324.2
B 4 173 53215 159.06 1693 1651 324.2
B 10 244 42051 124.62 1693 1651 324.2
C 3 233 285487 754.85 1627 1634 376.0
C 0 207 47689 122.47 1627 1634 376.0
C 14 234 15155 35.96 1627 1634 376.0
D 8 195 659389 1691.31 1606 1557 388.9
D 2 234 54496 136.11 1606 1557 388.9
D 2 225 50514 125.87 1606 1557 388.9

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