ASTROSAT CZTI

Data Quality Report

Orbit 20191019_A07_007T02_9000003244_level2

Creation date: 2025-12-04T19:03:20.627294
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/AS1A07_007T02_9000003244cztM0_level2.fits modeM0/AS1A07_007T02_9000003244cztM0_level2_quad_clean.evt
Size (bytes)1,021,553,280820,563,840
Size974.2 MB 782.6 MB
Events in quadrant A6,404,0604,703,590
Events in quadrant B6,070,8364,710,636
Events in quadrant C6,251,2064,549,504
Events in quadrant D5,475,5124,147,740

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02111030
B02184570
C02085840
D02257520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020080
B020080
C020080
D020080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9828911701.190367%
B9828920772.113156%
C9828916571.685845%
D9828921572.194549%

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 116890 98272 0 0 0.00% 0.00%
B 116889 98255 0 0 0.00% 0.00%
C 116890 98272 0 0 0.00% 0.00%
D 116890 98237 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 0 29 5986 10.86 1667 1566 406.9
A 7 110 4964 8.35 1667 1566 406.9
A 9 19 4738 7.79 1667 1566 406.9
B 2 9 4820 10.44 1602 1530 315.0
B 2 8 4106 8.18 1602 1530 315.0
B 5 128 4017 7.9 1602 1530 315.0
C 1 80 4739 7.61 1648 1550 419.0
C 1 81 4698 7.51 1648 1550 419.0
C 3 234 4365 6.72 1648 1550 419.0
D 10 189 3973 6.24 1563 1431 407.3
D 3 14 3878 6.01 1563 1431 407.3
D 6 231 3840 5.91 1563 1431 407.3

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