ASTROSAT CZTI

Data Quality Report

Orbit 41548

Creation date: 2024-06-27T22:30:18.459251
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_035T02_9000005676_41548cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41548cztM0_level2_quad_clean.evt
Size (bytes)341,340,48087,900,480
Size325.5 MB 83.8 MB
Events in quadrant A2,942,984613,687
Events in quadrant B2,968,049600,134
Events in quadrant C3,305,260561,275
Events in quadrant D3,034,119539,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117242
B0120582
C0127962
D0123202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4943380.768764%
B49432695.442039%
C49432695.442039%
D49431112.245600%

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 7065 4944 43 43 0.61% 0.87%
B 7065 4944 250 250 3.54% 5.06%
C 7065 4944 265 265 3.75% 5.36%
D 7065 4944 128 128 1.81% 2.59%

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 491247 4187.36 567 556 117.2
A 13 248 251799 2144.01 567 556 117.2
A 13 254 8239 65.56 567 556 117.2
B 5 255 718009 6821.87 551 538 105.2
B 0 245 53490 503.48 551 538 105.2
B 0 189 23479 218.13 551 538 105.2
C 0 10 617024 4913.15 541 545 125.5
C 14 254 363546 2893.01 541 545 125.5
C 15 214 212899 1692.4 541 545 125.5
D 2 249 275513 2049.96 552 537 134.1
D 13 249 203558 1513.54 552 537 134.1
D 5 222 191547 1423.99 552 537 134.1

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