ASTROSAT CZTI

Data Quality Report

Orbit 39865

Creation date: 2024-06-27T22:09:36.585701
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/AS1A12_032T02_9000005500_39865cztM0_level2.fits modeM0/AS1A12_032T02_9000005500_39865cztM0_level2_quad_clean.evt
Size (bytes)328,363,20082,454,400
Size313.2 MB 78.6 MB
Events in quadrant A2,682,441559,136
Events in quadrant B2,670,133578,151
Events in quadrant C3,245,425540,494
Events in quadrant D3,190,512488,795

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107902
B0110751
C0125281
D0127351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4703501.063151%
B4703641.360834%
C47032144.550287%
D47032916.187540%

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 6646 4704 32 32 0.48% 0.68%
B 6646 4704 12 12 0.18% 0.26%
C 6646 4704 224 224 3.37% 4.76%
D 6646 4704 246 246 3.70% 5.23%

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 345439 3167.97 537 526 108.9
A 13 248 159057 1456.08 537 526 108.9
A 7 3 70651 644.09 537 526 108.9
B 4 170 443307 4334.42 533 517 102.2
B 5 255 69994 680.1 533 517 102.2
B 0 230 24184 231.67 533 517 102.2
C 9 187 901420 7361.95 523 526 122.4
C 15 214 190589 1553.16 523 526 122.4
C 1 16 72846 590.99 523 526 122.4
D 2 249 582123 4559.91 522 509 127.5
D 2 250 243053 1901.57 522 509 127.5
D 12 233 183730 1436.47 522 509 127.5

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