ASTROSAT CZTI

Data Quality Report

Orbit 33175

Creation date: 2024-06-27T20:45:43.816164
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_080T02_9000004768_33175cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33175cztM0_level2_quad_clean.evt
Size (bytes)486,581,76070,338,240
Size464.0 MB 67.1 MB
Events in quadrant A2,671,830453,590
Events in quadrant B4,042,702442,537
Events in quadrant C2,930,577448,079
Events in quadrant D4,741,793424,248

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109373
B0152752
C0117642
D0179202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5159400.775344%
B51593116.028300%
C51591112.151580%
D51592635.097887%

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 7071 5160 24 24 0.34% 0.47%
B 7071 5160 201 201 2.84% 3.90%
C 7071 5160 79 79 1.12% 1.53%
D 7071 5160 215 215 3.04% 4.17%

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 14 234 154966 1198.33 648 637 128.8
A 13 254 9977 72.52 648 637 128.8
A 13 6 6983 49.28 648 637 128.8
B 5 172 745815 6398.28 625 609 116.5
B 0 219 675143 5791.49 625 609 116.5
B 0 190 69748 593.62 625 609 116.5
C 0 10 231253 1611.49 623 629 143.1
C 9 187 210217 1464.5 623 629 143.1
C 14 67 32781 224.66 623 629 143.1
D 8 195 762546 4643.97 621 606 164.1
D 10 203 452537 2754.49 621 606 164.1
D 7 223 398201 2423.31 621 606 164.1

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