ASTROSAT CZTI

Data Quality Report

Orbit 21770

Creation date: 2024-06-27T18:31:59.099635
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_005T01_9000003224_21770cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21770cztM0_level2_quad_clean.evt
Size (bytes)752,241,60091,846,080
Size717.4 MB 87.6 MB
Events in quadrant A3,247,570641,828
Events in quadrant B3,581,331662,729
Events in quadrant C3,264,803621,178
Events in quadrant D12,272,676425,855

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135252
B0145762
C0134732
D0407135

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6144741.204427%
B61441312.132161%
C61441211.969401%
D6143376261.240436%

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 7479 6145 0 0 0.00% 0.00%
B 7479 6145 22 22 0.29% 0.36%
C 7479 6145 0 0 0.00% 0.00%
D 7478 6143 3203 3203 42.83% 52.14%

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 13 254 11792 65.47 836 822 167.5
A 15 236 10214 56.06 836 822 167.5
A 0 226 7287 38.59 836 822 167.5
B 3 64 143136 902.2 844 824 157.7
B 15 35 36138 223.88 844 824 157.7
B 0 197 31979 197.51 844 824 157.7
C 14 238 127743 676.88 804 814 187.5
C 13 61 5613 25.59 804 814 187.5
C 3 202 1922 5.91 804 814 187.5
D 7 238 9549118 66550.38 588 573 143.5
D 2 136 220587 1533.43 588 573 143.5
D 2 16 81290 562.57 588 573 143.5

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