ASTROSAT CZTI

Data Quality Report

Orbit 30311

Creation date: 2024-06-27T20:13:32.014553
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_071T20_9000004354_30311cztM0_level2.evt modeM0/AS1A10_071T20_9000004354_30311cztM0_level2_quad_clean.evt
Size (bytes)536,664,96093,983,040
Size511.8 MB 89.6 MB
Events in quadrant A3,212,143623,288
Events in quadrant B5,066,381631,267
Events in quadrant C3,838,545594,611
Events in quadrant D3,724,789572,802

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132212
B0188875
C0154682
D0151522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6071701.153023%
B60711111.828364%
C60711612.651952%
D60711452.388404%

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 7456 6072 4 4 0.05% 0.07%
B 7456 6072 11 11 0.15% 0.18%
C 7456 6072 9 9 0.12% 0.15%
D 7456 6072 117 117 1.57% 1.93%

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 14 239 29175 175.22 817 803 161.9
A 8 192 28153 168.91 817 803 161.9
A 13 254 10517 59.99 817 803 161.9
B 6 159 1761253 11344.71 813 794 155.2
B 6 36 82572 526.99 813 794 155.2
B 15 185 27885 174.58 813 794 155.2
C 3 233 628557 3465.62 782 787 181.1
C 14 238 128106 702.87 782 787 181.1
C 0 10 18919 100.1 782 787 181.1
D 13 249 341419 1731.28 773 758 196.8
D 13 104 169428 857.2 773 758 196.8
D 8 195 144003 727.99 773 758 196.8

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