ASTROSAT CZTI

Data Quality Report

Orbit 39128

Creation date: 2024-06-27T22:01:04.345507
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/AS1C06_010T05_9000005436_39128cztM0_level2.fits modeM0/AS1C06_010T05_9000005436_39128cztM0_level2_quad_clean.evt
Size (bytes)420,246,72091,797,120
Size400.8 MB 87.5 MB
Events in quadrant A2,736,267650,730
Events in quadrant B2,992,799633,858
Events in quadrant C2,777,633604,722
Events in quadrant D6,665,148543,234

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110183
B0119632
C0111212
D0232982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4953130.262467%
B49531643.311125%
C4953350.706642%
D49534168.398950%

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 7046 4954 3 3 0.04% 0.06%
B 7045 4953 128 128 1.82% 2.58%
C 7046 4954 35 35 0.50% 0.71%
D 7046 4954 433 433 6.15% 8.74%

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 426574 3588.75 588 578 118.7
A 13 248 22804 187.24 588 578 118.7
A 9 143 8805 69.31 588 578 118.7
B 5 172 366579 3465.37 566 552 105.6
B 5 184 241892 2284.89 566 552 105.6
B 0 230 54654 512.21 566 552 105.6
C 9 187 355706 2752.67 561 564 129.0
C 15 214 211355 1633.82 561 564 129.0
C 3 233 11394 83.94 561 564 129.0
D 12 235 3558990 26574.94 555 538 133.9
D 12 233 214123 1595.07 555 538 133.9
D 13 249 202634 1509.27 555 538 133.9

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