ASTROSAT CZTI

Data Quality Report

Orbit 20231210_A13_008T06_9000005994_level2

Creation date: 2023-12-13T14:27:17.861587
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_008T06_9000005994cztM0_level2.fits modeM0/AS1A13_008T06_9000005994cztM0_level2_quad_clean.evt
Size (bytes)1,077,143,0401,087,214,400
Size1.0 GB 1.0 GB
Events in quadrant A6,126,6025,887,161
Events in quadrant B6,288,2146,650,224
Events in quadrant C6,451,8686,449,965
Events in quadrant D5,342,5585,540,814

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024900
B024900
C024900
D024900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04827730
B02784490
C02748340
D03801650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1225431721314.046498%
B12254832952.688742%
C12255022161.808242%
D122541115639.436025%

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 145146 122437 0 0 0.00% 0.00%
B 145146 122503 0 0 0.00% 0.00%
C 145146 122527 0 0 0.00% 0.00%
D 145146 122178 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 5054 8.75 1596 1484 408.0
A 15 236 4867 8.29 1596 1484 408.0
A 0 29 4787 8.1 1596 1484 408.0
B 2 9 5635 12.34 1664 1579 328.8
B 3 17 4560 9.07 1664 1579 328.8
B 2 8 4411 8.61 1664 1579 328.8
C 3 202 5057 7.93 1708 1582 438.3
C 3 203 4821 7.39 1708 1582 438.3
C 1 81 4760 7.25 1708 1582 438.3
D 10 189 4060 6.2 1537 1395 430.1
D 3 14 4009 6.08 1537 1395 430.1
D 4 16 3930 5.89 1537 1395 430.1

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