ASTROSAT CZTI

Data Quality Report

Orbit 00899

Creation date: 2024-06-27T14:04:28.145578
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/AS1P01_161T05_9000000180_00899cztM0_level2.evt modeM0/AS1P01_161T05_9000000180_00899cztM0_level2_quad_clean.evt
Size (bytes)1,093,821,12065,787,840
Size1.0 GB 62.7 MB
Events in quadrant A7,237,236414,526
Events in quadrant B10,610,664342,981
Events in quadrant C8,293,396408,689
Events in quadrant D6,582,143399,896

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258360
B0359960
C0289450
D0238650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A608940.065692%
B6090114518.801314%
C6090400.656814%
D6090140.229885%

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 7169 6090 168 168 2.34% 2.76%
B 7170 6091 1739 1739 24.25% 28.55%
C 7170 6091 397 397 5.54% 6.52%
D 7170 6091 115 115 1.60% 1.89%

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 15 127 209441 475.5 1810 1825 436.6
A 14 170 68699 153.16 1810 1825 436.6
A 15 233 12525 24.5 1810 1825 436.6
B 3 0 3956706 9911.37 1699 1708 399.0
B 0 220 62375 152.03 1699 1708 399.0
B 5 191 51098 123.77 1699 1708 399.0
C 9 83 1347859 2760.64 1762 1831 487.6
C 15 241 22514 42.42 1762 1831 487.6
C 3 111 21053 39.42 1762 1831 487.6
D 1 4 134235 252.67 1689 1745 524.4
D 13 169 55411 102.35 1689 1745 524.4
D 7 207 38386 69.88 1689 1745 524.4

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