ASTROSAT CZTI

Data Quality Report

Orbit 32139

Creation date: 2024-06-27T20:36:54.914343
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/AS1T04_051T01_9000004686_32139cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32139cztM0_level2_quad_clean.evt
Size (bytes)1,408,642,560217,664,640
Size1.3 GB 207.6 MB
Events in quadrant A7,251,9741,449,642
Events in quadrant B15,574,1751,360,290
Events in quadrant C8,184,1611,423,374
Events in quadrant D10,687,0801,370,469

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299391
B0561341
C0329641
D0422481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02880
B02880
C02880
D02880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143152892.018861%
B14316191613.383627%
C143166704.680078%
D143165213.639285%

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 19921 14317 1 1 0.01% 0.01%
B 19922 14318 1030 1030 5.17% 7.19%
C 19922 14318 123 123 0.62% 0.86%
D 19922 14318 286 286 1.44% 2.00%

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 12 189 60197 159.3 1844 1808 366.5
A 0 6 38193 99.27 1844 1808 366.5
A 13 6 37890 98.44 1844 1808 366.5
B 10 245 4056389 12396.6 1740 1698 327.1
B 6 159 3778337 11546.5 1740 1698 327.1
B 5 172 385952 1174.8 1740 1698 327.1
C 0 10 892779 2179.03 1762 1775 408.9
C 14 238 302720 735.99 1762 1775 408.9
C 4 175 50745 119.76 1762 1775 408.9
D 8 195 2743204 6502.4 1785 1736 421.6
D 12 233 606105 1433.48 1785 1736 421.6
D 14 52 184700 433.97 1785 1736 421.6

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