ASTROSAT CZTI

Data Quality Report

Orbit 07629

Creation date: 2024-06-27T15:22:00.437468
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/AS1A02_178T01_9000001048_07629cztM0_level2.evt modeM0/AS1A02_178T01_9000001048_07629cztM0_level2_quad_clean.evt
Size (bytes)342,624,96050,100,480
Size326.8 MB 47.8 MB
Events in quadrant A2,460,948302,927
Events in quadrant B2,248,742306,674
Events in quadrant C2,688,859298,563
Events in quadrant D2,667,046287,569

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101861
B094991
C0110531
D0109941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4562130.284963%
B4562120.263043%
C4562801.753617%
D4562601.315213%

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 4562 4562 7 7 0.15% 0.15%
B 4562 4562 3 3 0.07% 0.07%
C 4562 4562 50 50 1.10% 1.10%
D 4562 4562 44 44 0.96% 0.96%

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 13 251 309564 2731.03 558 547 113.2
A 0 226 5406 42.94 558 547 113.2
A 12 194 4879 38.29 558 547 113.2
B 0 214 35052 326.15 560 547 105.8
B 0 229 14579 132.63 560 547 105.8
B 12 111 10603 95.05 560 547 105.8
C 4 254 383568 3068.4 537 541 124.8
C 9 68 169757 1355.57 537 541 124.8
C 1 16 33093 260.77 537 541 124.8
D 2 152 285549 2148.6 538 521 132.7
D 14 34 142954 1073.69 538 521 132.7
D 2 14 69949 523.36 538 521 132.7

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