ASTROSAT CZTI

Data Quality Report

Orbit 20240426_A13_070T04_9000006204_level2

Creation date: 2024-04-29T09:30:47.658174
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/AS1A13_070T04_9000006204cztM0_level2.fits modeM0/AS1A13_070T04_9000006204cztM0_level2_quad_clean.evt
Size (bytes)1,060,496,6401,232,216,640
Size1011.4 MB 1.1 GB
Events in quadrant A6,180,1927,483,708
Events in quadrant B6,067,2667,763,143
Events in quadrant C6,191,4167,223,232
Events in quadrant D5,382,2946,559,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024500
B024500
C024500
D024500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01190
C01190
D01190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04160330
B02724830
C02772590
D02932730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12098944783.701163%
B12099126632.200990%
C12099036182.990330%
D12099236733.035738%

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 132882 120989 0 0 0.00% 0.00%
B 132882 120969 0 0 0.00% 0.00%
C 132882 120572 0 0 0.00% 0.00%
D 132882 120951 0 0 0.00% 0.00%

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 7 110 5042 8.6 1614 1505 411.4
A 14 95 4712 7.79 1614 1505 411.4
A 0 29 4655 7.66 1614 1505 411.4
B 2 9 5883 14.07 1606 1531 309.3
B 2 8 4837 10.69 1606 1531 309.3
B 3 17 4545 9.75 1606 1531 309.3
C 1 81 4841 7.79 1638 1522 426.3
C 3 202 4783 7.65 1638 1522 426.3
C 3 203 4706 7.47 1638 1522 426.3
D 10 189 4009 6.05 1546 1402 430.8
D 15 63 3898 5.79 1546 1402 430.8
D 15 47 3851 5.68 1546 1402 430.8

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