ASTROSAT CZTI

Data Quality Report

Orbit 52079

Creation date: 2025-05-15T07:21:06.847405
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/AS1C09_011T07_9000006470_52079cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52079cztM0_level2_quad_clean.evt
Size (bytes)1,142,614,08072,132,480
Size1.1 GB 68.8 MB
Events in quadrant A4,014,966643,689
Events in quadrant B9,192,087586,076
Events in quadrant C9,849,386466,466
Events in quadrant D18,705,4744,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169121
B0321751
C0340611
D0600711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69271412.035513%
B6927148121.380107%
C6927221231.933016%
D6926688699.422466%

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 7457 6928 104 104 1.39% 1.50%
B 7457 6928 1305 1305 17.50% 18.84%
C 7457 6928 2026 2026 27.17% 29.24%
D 7455 6925 6815 6815 91.42% 98.41%

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 6 196 361478 2003.99 707 688 180.0
A 8 43 183659 1016.3 707 688 180.0
A 4 3 101797 561.61 707 688 180.0
B 10 254 3318053 23322.69 672 650 142.2
B 10 128 1305904 9176.46 672 650 142.2
B 5 172 582155 4088.22 672 650 142.2
C 15 224 4267871 25020.47 610 606 170.6
C 15 193 1379094 8082.56 610 606 170.6
C 12 252 391749 2293.41 610 606 170.6
D 15 94 17453585 521074.23 109 104 33.5
D 6 42 415799 12410.59 109 104 33.5
D 11 176 112710 3361.86 109 104 33.5

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