ASTROSAT CZTI

Data Quality Report

Orbit 30768

Creation date: 2024-06-27T20:19:24.036748
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_071T12_9000004446_30768cztM0_level2.evt modeM0/AS1A10_071T12_9000004446_30768cztM0_level2_quad_clean.evt
Size (bytes)1,767,381,120230,215,680
Size1.6 GB 219.6 MB
Events in quadrant A8,775,7881,483,270
Events in quadrant B14,056,3661,472,098
Events in quadrant C9,508,4661,423,098
Events in quadrant D19,957,1381,334,725

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381543
B0555523
C0398393
D0724373

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182611330.728328%
B182622661.456576%
C182623591.965831%
D18262202511.088599%

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 20326 18262 33 33 0.16% 0.18%
B 20327 18262 47 47 0.23% 0.26%
C 20327 18262 73 73 0.36% 0.40%
D 20327 18262 1864 1864 9.17% 10.21%

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 0 13 230930 515.84 2213 2166 443.5
A 13 254 34876 73.76 2213 2166 443.5
A 3 137 22911 46.78 2213 2166 443.5
B 6 159 5099722 12287.14 2180 2121 414.9
B 4 80 177152 421.89 2180 2121 414.9
B 0 230 53148 122.99 2180 2121 414.9
C 3 233 592638 1191.72 2117 2133 495.5
C 14 238 339039 679.92 2117 2133 495.5
C 0 10 160863 320.34 2117 2133 495.5
D 8 195 10308359 18692.47 2073 2036 551.4
D 13 249 686881 1242.1 2073 2036 551.4
D 12 227 608642 1100.2 2073 2036 551.4

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