ASTROSAT CZTI

Data Quality Report

Orbit 11147

Creation date: 2024-06-27T16:08:54.283166
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/AS1A04_180T01_9000001622_11147cztM0_level2.evt modeM0/AS1A04_180T01_9000001622_11147cztM0_level2_quad_clean.evt
Size (bytes)400,161,60047,404,800
Size381.6 MB 45.2 MB
Events in quadrant A4,187,490277,069
Events in quadrant B2,795,225299,262
Events in quadrant C1,859,004301,328
Events in quadrant D3,003,634273,286

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182463002
B0133722490
C095711315
D0132161578

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02110
B0143
C0143
D0154

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09616
B09614
C09917
D09919

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A398641710.461616%
B40172165.377147%
C4052190.468904%
D40442636.503462%

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 6633 4050 270 270 4.07% 6.67%
B 6624 4067 104 104 1.57% 2.56%
C 6648 4109 0 0 0.00% 0.00%
D 6635 4099 179 179 2.70% 4.37%

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 8 5 1568359 16445.51 471 461 95.3
A 14 238 554119 5807.26 471 461 95.3
A 8 15 129038 1348.63 471 461 95.3
B 4 239 545562 5854.35 486 475 93.1
B 15 204 145385 1556.36 486 475 93.1
B 10 16 117962 1261.84 486 475 93.1
C 9 204 5351 43.98 474 478 110.8
C 13 61 3646 28.59 474 478 110.8
C 4 222 1918 13.0 474 478 110.8
D 2 14 364347 3274.33 455 443 111.1
D 11 129 355170 3191.76 455 443 111.1
D 1 52 238903 2145.61 455 443 111.1

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