ASTROSAT CZTI

Data Quality Report

Orbit 41127

Creation date: 2024-06-27T22:24:48.124437
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_052T04_9000005602_41127cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41127cztM0_level2_quad_clean.evt
Size (bytes)363,185,28092,488,320
Size346.4 MB 88.2 MB
Events in quadrant A2,849,284638,770
Events in quadrant B3,389,044626,244
Events in quadrant C2,594,452616,058
Events in quadrant D4,217,470564,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113292
B0132061
C0106081
D0162631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506180.158072%
B50612514.959494%
C5061300.592768%
D50611703.359020%

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 7184 5062 2 2 0.03% 0.04%
B 7184 5062 184 184 2.56% 3.63%
C 7184 5062 30 30 0.42% 0.59%
D 7184 5062 142 142 1.98% 2.81%

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 453855 3662.49 608 596 123.8
A 2 79 24247 191.11 608 596 123.8
A 12 189 15374 119.41 608 596 123.8
B 0 245 958226 8572.69 585 570 111.7
B 0 186 101877 906.87 585 570 111.7
B 0 190 19458 169.08 585 570 111.7
C 15 214 217991 1637.25 580 585 132.8
C 0 10 94651 708.39 580 585 132.8
C 14 254 9939 70.44 580 585 132.8
D 2 16 1349844 9477.24 581 566 142.4
D 13 249 411513 2886.46 581 566 142.4
D 2 249 168943 1182.67 581 566 142.4

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