ASTROSAT CZTI

Data Quality Report

Orbit 43928

Creation date: 2024-06-27T22:57:19.213367
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/AS1A13_023T01_9000005916_43928cztM0_level2.fits modeM0/AS1A13_023T01_9000005916_43928cztM0_level2_quad_clean.evt
Size (bytes)262,615,68056,528,640
Size250.4 MB 53.9 MB
Events in quadrant A3,303,191371,051
Events in quadrant B1,790,311385,737
Events in quadrant C1,712,953374,261
Events in quadrant D2,636,624328,836

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125030
B077210
C077080
D0102430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3562641.796743%
B3562250.701853%
C3562250.701853%
D35621945.446378%

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 3562 3562 36 36 1.01% 1.01%
B 3562 3562 14 14 0.39% 0.39%
C 3562 3562 31 31 0.87% 0.87%
D 3562 3562 189 189 5.31% 5.31%

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 1163436 14432.0 383 375 80.6
A 10 83 521374 6464.89 383 375 80.6
A 7 191 74581 920.8 383 375 80.6
B 0 200 59994 770.63 381 369 77.4
B 0 213 58700 753.9 381 369 77.4
B 5 172 49445 634.29 381 369 77.4
C 15 158 100016 1117.48 373 373 89.2
C 14 254 53646 597.45 373 373 89.2
C 15 157 31197 345.69 373 373 89.2
D 1 52 548426 5877.99 366 355 93.2
D 6 239 200492 2146.44 366 355 93.2
D 2 249 87239 931.82 366 355 93.2

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