ASTROSAT CZTI

Data Quality Report

Orbit 37233

Creation date: 2024-06-27T21:37:14.418235
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/AS1A10_123T11_9000005286_37233cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37233cztM0_level2_quad_clean.evt
Size (bytes)447,108,48084,723,840
Size426.4 MB 80.8 MB
Events in quadrant A3,006,229569,407
Events in quadrant B3,365,901560,029
Events in quadrant C3,101,411539,021
Events in quadrant D3,708,052526,852

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121623
B0134622
C0122832
D0144242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5290520.982987%
B5290671.266541%
C52901412.665406%
D52911472.778303%

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 7353 5291 32 32 0.44% 0.60%
B 7353 5291 28 28 0.38% 0.53%
C 7353 5291 119 119 1.62% 2.25%
D 7354 5292 115 115 1.56% 2.17%

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 291335 2279.35 631 619 127.5
A 15 237 95788 746.17 631 619 127.5
A 9 143 69405 539.31 631 619 127.5
B 4 232 277376 2352.93 618 602 117.6
B 0 190 181956 1541.74 618 602 117.6
B 0 213 144508 1223.38 618 602 117.6
C 0 10 266876 1906.71 600 605 139.6
C 14 254 236236 1687.3 600 605 139.6
C 15 214 225303 1609.01 600 605 139.6
D 13 249 188525 1247.26 610 594 150.7
D 2 120 188077 1244.28 610 594 150.7
D 12 248 141566 935.6 610 594 150.7

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