ASTROSAT CZTI

Data Quality Report

Orbit 38709

Creation date: 2024-06-27T21:55:24.254411
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_054T01_9000005392_38709cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38709cztM0_level2_quad_clean.evt
Size (bytes)391,950,72088,871,040
Size373.8 MB 84.8 MB
Events in quadrant A2,797,366642,618
Events in quadrant B2,533,135659,216
Events in quadrant C3,045,925615,133
Events in quadrant D5,728,584410,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113153
B0108592
C0121242
D0204872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5180110.212355%
B5180150.289575%
C5180641.235521%
D5180149328.822394%

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 7302 5180 7 7 0.10% 0.14%
B 7302 5180 5 5 0.07% 0.10%
C 7302 5180 57 57 0.78% 1.10%
D 7302 5180 1249 1249 17.10% 24.11%

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 395703 3230.67 607 596 122.3
A 0 8 30266 242.6 607 596 122.3
A 13 248 14316 112.18 607 596 122.3
B 4 171 92752 798.5 602 587 115.4
B 5 200 23409 197.72 602 587 115.4
B 15 85 19048 159.94 602 587 115.4
C 14 254 518935 3852.43 583 586 134.6
C 15 214 214270 1588.13 583 586 134.6
C 3 110 13180 93.6 583 586 134.6
D 2 16 3119537 25068.93 506 492 124.4
D 12 227 314350 2522.59 506 492 124.4
D 12 235 77942 622.49 506 492 124.4

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