ASTROSAT CZTI

Data Quality Report

Orbit 15717

Creation date: 2024-06-27T17:12:31.324001
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_198T01_9000002322_15717cztM0_level2.evt modeM0/AS1A04_198T01_9000002322_15717cztM0_level2_quad_clean.evt
Size (bytes)499,723,200105,183,360
Size476.6 MB 100.3 MB
Events in quadrant A2,977,783692,105
Events in quadrant B3,181,211716,817
Events in quadrant C3,937,380693,480
Events in quadrant D4,615,162648,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129053
B0134642
C0161362
D0180102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6233130.208567%
B6233390.625702%
C6233430.689876%
D62333756.016365%

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 7469 6235 2 2 0.03% 0.03%
B 7469 6235 11 11 0.15% 0.18%
C 7469 6235 0 0 0.00% 0.00%
D 7469 6235 323 323 4.32% 5.18%

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 9 143 26459 168.36 764 749 152.7
A 15 69 9260 55.74 764 749 152.7
A 0 226 6935 40.51 764 749 152.7
B 5 236 68344 463.38 776 756 145.9
B 4 173 32052 214.56 776 756 145.9
B 0 230 23276 154.39 776 756 145.9
C 3 233 818300 4656.12 756 763 175.6
C 14 238 116720 660.41 756 763 175.6
C 9 54 43060 240.89 756 763 175.6
D 12 144 1157670 5920.26 731 717 195.4
D 1 52 593583 3033.76 731 717 195.4
D 10 70 56950 287.75 731 717 195.4

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