ASTROSAT CZTI

Data Quality Report

Orbit 36526

Creation date: 2024-06-27T21:27:58.317317
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/AS1A11_089T02_9000005216_36526cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36526cztM0_level2_quad_clean.evt
Size (bytes)433,103,04071,167,680
Size413.0 MB 67.9 MB
Events in quadrant A2,826,669450,797
Events in quadrant B3,045,364446,111
Events in quadrant C3,194,724432,420
Events in quadrant D3,655,903420,379

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121143
B0128042
C0132202
D0148182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A579890.155226%
B5798430.741635%
C57981051.810969%
D57981592.742325%

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 7201 5799 4 4 0.06% 0.07%
B 7201 5799 22 22 0.31% 0.38%
C 7201 5799 72 72 1.00% 1.24%
D 7201 5799 138 138 1.92% 2.38%

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 10 83 219578 1621.69 665 653 135.0
A 15 223 15930 113.16 665 653 135.0
A 13 6 13226 93.13 665 653 135.0
B 5 255 215308 1679.4 655 637 127.8
B 4 232 63921 495.08 655 637 127.8
B 5 172 61320 474.73 655 637 127.8
C 0 10 387023 2595.57 633 637 148.9
C 15 214 247679 1659.52 633 637 148.9
C 10 49 77932 519.23 633 637 148.9
D 13 249 234254 1491.95 634 616 156.6
D 12 17 157330 1000.73 634 616 156.6
D 13 171 151435 963.09 634 616 156.6

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