ASTROSAT CZTI

Data Quality Report

Orbit 07795

Creation date: 2024-06-27T15:24:06.708015
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/AS1G06_032T01_9000001074_07795cztM0_level2.evt modeM0/AS1G06_032T01_9000001074_07795cztM0_level2_quad_clean.evt
Size (bytes)456,883,200107,256,960
Size435.7 MB 102.3 MB
Events in quadrant A3,248,972698,353
Events in quadrant B3,386,670715,716
Events in quadrant C3,375,872684,045
Events in quadrant D3,338,037651,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162921777
B0165171830
C0170042023
D0170372089

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143
B0141
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016610
B016614
C016610
D016624

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7159540.754295%
B7151480.671235%
C7119460.646158%
D7091450.634607%

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 9429 7742 0 0 0.00% 0.00%
B 9429 7720 0 0 0.00% 0.00%
C 9429 7723 21 21 0.22% 0.27%
D 9429 7686 16 16 0.17% 0.21%

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 0 226 7892 40.82 844 822 173.2
A 12 194 7334 37.6 844 822 173.2
A 3 137 3085 13.07 844 822 173.2
B 4 239 21205 125.54 851 829 162.3
B 12 111 15997 93.45 851 829 162.3
B 0 214 13038 75.22 851 829 162.3
C 4 254 120786 632.88 810 811 189.6
C 9 243 49695 257.87 810 811 189.6
C 12 4 24939 127.28 810 811 189.6
D 13 104 122354 613.56 806 780 198.1
D 2 152 54259 269.9 806 780 198.1
D 2 14 52774 262.4 806 780 198.1

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