ASTROSAT CZTI

Data Quality Report

Orbit 30125

Creation date: 2024-06-27T20:11:13.748024
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/AS1A10_097T01_9000004334_30125cztM0_level2.evt modeM0/AS1A10_097T01_9000004334_30125cztM0_level2_quad_clean.evt
Size (bytes)696,715,200102,839,040
Size664.4 MB 98.1 MB
Events in quadrant A3,176,008678,936
Events in quadrant B5,197,637677,125
Events in quadrant C8,471,131633,286
Events in quadrant D3,801,567656,537

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137521
B0204261
C0298471
D0153441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6720861.279762%
B67201462.172619%
C6720139720.788690%
D6720781.160714%

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 7505 6721 0 0 0.00% 0.00%
B 7505 6721 8 8 0.11% 0.12%
C 7505 6721 891 891 11.87% 13.26%
D 7505 6721 16 16 0.21% 0.24%

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 11906 68.0 820 802 163.3
A 8 192 10647 60.29 820 802 163.3
A 3 137 7976 43.93 820 802 163.3
B 6 159 1889202 12343.79 802 780 153.0
B 4 171 90711 587.84 802 780 153.0
B 0 190 57380 369.97 802 780 153.0
C 3 233 5384784 30608.44 756 760 175.9
C 14 238 121859 688.45 756 760 175.9
C 2 114 15059 81.29 756 760 175.9
D 12 227 318358 1636.01 802 784 194.1
D 8 195 232460 1193.5 802 784 194.1
D 2 250 84086 429.14 802 784 194.1

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