ASTROSAT CZTI

Data Quality Report

Orbit 08218

Creation date: 2024-06-27T15:29:34.832575
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/AS1C02_041T01_9000001136_08218cztM0_level2.evt modeM0/AS1C02_041T01_9000001136_08218cztM0_level2_quad_clean.evt
Size (bytes)427,728,96064,474,560
Size407.9 MB 61.5 MB
Events in quadrant A3,197,190378,489
Events in quadrant B3,222,454382,274
Events in quadrant C3,018,717376,365
Events in quadrant D3,075,623363,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137673
B0135854
C0133654
D0136722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64631201.856723%
B6462951.470133%
C6462741.145156%
D6463991.531796%

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 7513 6463 22 22 0.29% 0.34%
B 7513 6463 2 2 0.03% 0.03%
C 7513 6463 0 0 0.00% 0.00%
D 7513 6463 10 10 0.13% 0.15%

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 5 16 133288 814.63 794 777 162.7
A 0 226 7318 40.21 794 777 162.7
A 12 194 7114 38.96 794 777 162.7
B 0 214 76788 497.29 801 780 152.8
B 12 111 16297 101.52 801 780 152.8
B 0 197 13358 82.29 801 780 152.8
C 9 68 6471 31.53 770 773 180.7
C 13 61 5980 28.81 770 773 180.7
C 8 128 5260 24.83 770 773 180.7
D 13 122 61453 320.58 768 745 189.4
D 12 233 41993 217.81 768 745 189.4
D 1 52 34403 177.73 768 745 189.4

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