ASTROSAT CZTI

Data Quality Report

Orbit 39467

Creation date: 2024-06-27T22:04:54.753683
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_044T16_9000005478_39467cztM0_level2.fits modeM0/AS1A12_044T16_9000005478_39467cztM0_level2_quad_clean.evt
Size (bytes)322,796,16070,793,280
Size307.8 MB 67.5 MB
Events in quadrant A2,648,498477,751
Events in quadrant B2,523,453481,470
Events in quadrant C3,941,829444,414
Events in quadrant D2,492,292430,777

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104481
B0104961
C0146041
D0104961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4400210.477273%
B44001092.477273%
C44003608.181818%
D44001122.545455%

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 5743 4401 13 13 0.23% 0.30%
B 5743 4401 59 59 1.03% 1.34%
C 5743 4401 328 328 5.71% 7.45%
D 5743 4401 76 76 1.32% 1.73%

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 15 222 412988 4187.58 479 470 98.5
A 10 83 303826 3079.45 479 470 98.5
A 2 79 28056 280.03 479 470 98.5
B 5 255 371893 3990.13 471 457 93.1
B 8 3 281861 3022.96 471 457 93.1
B 12 111 11645 120.19 471 457 93.1
C 15 208 1977694 18582.73 451 454 106.4
C 15 214 178180 1670.33 451 454 106.4
C 9 187 14820 135.02 451 454 106.4
D 2 249 402063 3482.56 462 448 115.3
D 12 227 110306 952.62 462 448 115.3
D 10 118 69636 599.96 462 448 115.3

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