ASTROSAT CZTI

Data Quality Report

Orbit 15590

Creation date: 2024-06-27T17:10:49.415738
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_037T02_9000002310_15590cztM0_level2.evt modeM0/AS1A04_037T02_9000002310_15590cztM0_level2_quad_clean.evt
Size (bytes)463,305,60077,950,080
Size441.8 MB 74.3 MB
Events in quadrant A3,507,708489,241
Events in quadrant B3,351,211498,427
Events in quadrant C3,204,328474,134
Events in quadrant D3,544,259463,290

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140352
B0135791
C0131621
D0142561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62401171.875000%
B62401272.035256%
C62401292.067308%
D62401832.932692%

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 7446 6241 0 0 0.00% 0.00%
B 7446 6241 8 8 0.11% 0.13%
C 7446 6241 1 1 0.01% 0.02%
D 7446 6241 73 73 0.98% 1.17%

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 0 253 247928 1500.35 817 801 164.7
A 15 157 111652 672.99 817 801 164.7
A 0 226 7263 39.23 817 801 164.7
B 4 48 108860 708.84 804 784 152.5
B 0 189 36128 231.81 804 784 152.5
B 4 173 23505 149.02 804 784 152.5
C 14 238 121220 674.06 775 782 178.7
C 3 233 56927 314.23 775 782 178.7
C 13 61 5429 26.01 775 782 178.7
D 1 52 146643 760.44 793 769 191.8
D 12 110 96681 499.99 793 769 191.8
D 5 51 49860 255.91 793 769 191.8

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