ASTROSAT CZTI

Data Quality Report

Orbit 39813

Creation date: 2024-06-27T22:09:15.274867
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_022T01_9000005498_39813cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39813cztM0_level2_quad_clean.evt
Size (bytes)878,463,360141,022,080
Size837.8 MB 134.5 MB
Events in quadrant A6,196,2851,010,409
Events in quadrant B5,300,3761,053,159
Events in quadrant C15,702,768599,729
Events in quadrant D4,581,454947,340

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244853
B0224782
C0530362
D0207592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95044835.082071%
B95042502.630471%
C9504440846.380471%
D95041281.346801%

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 12640 9506 446 446 3.53% 4.69%
B 12640 9506 174 174 1.38% 1.83%
C 12640 9505 3875 3875 30.66% 40.77%
D 12640 9506 50 50 0.40% 0.53%

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 6 10 1328914 6526.04 998 977 203.5
A 10 83 670403 3289.84 998 977 203.5
A 13 248 224314 1097.57 998 977 203.5
B 4 171 535296 2783.73 1005 979 191.9
B 5 255 341052 1771.74 1005 979 191.9
B 0 229 240470 1247.72 1005 979 191.9
C 9 187 9092804 48720.44 801 805 186.6
C 15 208 3150926 16880.26 801 805 186.6
C 15 214 316998 1694.35 801 805 186.6
D 2 249 200722 828.16 990 964 241.2
D 13 249 168640 695.15 990 964 241.2
D 2 250 116035 477.06 990 964 241.2

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