ASTROSAT CZTI

Data Quality Report

Orbit 42962

Creation date: 2024-06-27T22:46:18.681006
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/AS1T05_145T01_9000005836_42962cztM0_level2.fits modeM0/AS1T05_145T01_9000005836_42962cztM0_level2_quad_clean.evt
Size (bytes)561,084,480106,113,600
Size535.1 MB 101.2 MB
Events in quadrant A3,676,153849,993
Events in quadrant B8,632,965445,601
Events in quadrant C3,001,882824,020
Events in quadrant D5,028,085706,384

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146422
B0294487
C0118702
D0186462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5542851.533742%
B5541276949.972929%
C5541100.180473%
D55413736.731637%

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 7185 5543 54 54 0.75% 0.97%
B 7184 5542 2532 2532 35.24% 45.69%
C 7184 5542 10 10 0.14% 0.18%
D 7184 5542 414 414 5.76% 7.47%

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 594169 3548.12 710 691 167.3
A 15 237 317625 1894.8 710 691 167.3
A 15 222 16980 97.38 710 691 167.3
B 4 81 5943232 57592.69 473 462 103.2
B 4 171 791268 7663.88 473 462 103.2
B 15 85 16486 155.29 473 462 103.2
C 15 214 227288 1285.29 690 699 176.3
C 14 254 72047 404.71 690 699 176.3
C 3 233 9958 52.52 690 699 176.3
D 12 2 839026 4549.42 673 648 184.3
D 12 233 627621 3402.24 673 648 184.3
D 1 52 523282 2836.05 673 648 184.3

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