ASTROSAT CZTI

Data Quality Report

Orbit 11500

Creation date: 2024-06-27T16:13:51.013976
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_021T05_9000001686_11500cztM0_level2.evt modeM0/AS1A04_021T05_9000001686_11500cztM0_level2_quad_clean.evt
Size (bytes)1,345,360,320159,289,920
Size1.3 GB 151.9 MB
Events in quadrant A14,381,953873,756
Events in quadrant B12,164,337957,933
Events in quadrant C6,016,2311,068,986
Events in quadrant D7,277,669995,239

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519165
B0451094
C0272764
D0308264

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13411262519.573484%
B13411156611.676982%
C13411500.372828%
D134111721.282529%

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 15007 13416 1782 1782 11.87% 13.28%
B 15007 13416 1077 1077 7.18% 8.03%
C 15007 13416 0 0 0.00% 0.00%
D 15007 13415 98 98 0.65% 0.73%

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 8597834 29602.29 1418 1389 290.4
A 1 162 71708 242.15 1418 1389 290.4
A 9 143 56427 189.53 1418 1389 290.4
B 4 81 3124915 10974.98 1499 1457 284.6
B 4 239 1633755 5735.45 1499 1457 284.6
B 3 64 1112738 3904.74 1499 1457 284.6
C 12 4 25691 68.0 1537 1549 355.0
C 13 61 11102 26.91 1537 1549 355.0
C 3 202 3633 5.87 1537 1549 355.0
D 2 120 383887 1054.98 1516 1474 362.5
D 8 195 300312 824.42 1516 1474 362.5
D 10 253 168773 461.54 1516 1474 362.5

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