ASTROSAT CZTI

Data Quality Report

Orbit 35434

Creation date: 2022-04-20T22:01:32.045221
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/AS1A11_097T07_9000005072_35434cztM0_level2.evt modeM0/AS1A11_097T07_9000005072_35434cztM0_level2_quad_clean.evt
Size (bytes)113,676,48023,146,560
Size108.4 MB 22.1 MB
Events in quadrant A565,651159,670
Events in quadrant B1,286,312154,553
Events in quadrant C825,208153,910
Events in quadrant D688,326148,775

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023561
B046101
C031181
D027411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A109710.091158%
B109713412.215132%
C1097736.654512%
D1097161.458523%

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 1097 1097 0 0 0.00% 0.00%
B 1097 1097 105 105 9.57% 9.57%
C 1097 1097 57 57 5.20% 5.20%
D 1097 1097 16 16 1.46% 1.46%

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 10 83 46997 1624.87 133 130 28.8
A 13 6 1932 62.47 133 130 28.8
A 13 254 1727 55.37 133 130 28.8
B 5 236 387864 14730.43 129 126 26.3
B 4 251 341690 12976.24 129 126 26.3
B 5 200 13135 494.22 129 126 26.3
C 0 10 171787 5375.78 128 130 31.9
C 0 207 89935 2812.42 128 130 31.9
C 15 214 47926 1496.83 128 130 31.9
D 7 80 70719 2111.01 128 125 33.4
D 1 52 61893 1847.08 128 125 33.4
D 8 195 20317 603.81 128 125 33.4

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