ASTROSAT CZTI

Data Quality Report

Orbit 32875

Creation date: 2024-06-27T20:42:53.042700
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_005T04_9000004742_32875cztM0_level2.evt modeM0/AS1A11_005T04_9000004742_32875cztM0_level2_quad_clean.evt
Size (bytes)379,728,00050,425,920
Size362.1 MB 48.1 MB
Events in quadrant A2,193,276310,696
Events in quadrant B3,034,170309,141
Events in quadrant C2,374,747303,484
Events in quadrant D3,582,865277,689

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010054657
B012906989
C010638706
D014755939

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01024
B01019
C01015
D01026

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4651100.215008%
B46152234.832069%
C4629400.864118%
D46111623.513338%

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 7073 4722 0 0 0.00% 0.00%
B 7073 4687 136 136 1.92% 2.90%
C 7073 4696 30 30 0.42% 0.64%
D 7073 4681 107 107 1.51% 2.29%

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 63 15639 134.57 560 551 112.1
A 13 254 8602 71.81 560 551 112.1
A 13 6 8091 67.25 560 551 112.1
B 5 172 634105 6082.92 550 537 104.2
B 0 197 61293 583.32 550 537 104.2
B 0 230 51180 486.22 550 537 104.2
C 0 10 126672 1024.5 535 540 123.1
C 3 233 120671 975.76 535 540 123.1
C 14 67 19826 156.65 535 540 123.1
D 8 195 402363 3047.8 522 509 131.9
D 2 250 343408 2600.66 522 509 131.9
D 10 203 339089 2567.91 522 509 131.9

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