ASTROSAT CZTI

Data Quality Report

Orbit 42850

Creation date: 2024-06-27T22:44:58.874782
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_138T01_9000005828_42850cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42850cztM0_level2_quad_clean.evt
Size (bytes)510,272,64077,238,720
Size486.6 MB 73.7 MB
Events in quadrant A3,014,536592,471
Events in quadrant B9,019,126304,773
Events in quadrant C2,777,447583,637
Events in quadrant D3,689,966508,270

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120922
B0301461
C0114371
D0143451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4983240.481638%
B4983270454.264499%
C4983601.204094%
D49843106.219904%

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 6984 4984 21 21 0.30% 0.42%
B 6984 4984 2574 2574 36.86% 51.65%
C 6984 4984 58 58 0.83% 1.16%
D 6985 4985 327 327 4.68% 6.56%

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 562860 4854.02 563 552 115.8
A 13 248 111420 957.05 563 552 115.8
A 12 189 73048 625.81 563 552 115.8
B 4 81 7162010 89260.72 411 400 80.2
B 5 255 105971 1315.81 411 400 80.2
B 15 85 56933 704.61 411 400 80.2
C 14 254 299096 2321.52 546 551 128.6
C 15 214 200175 1552.3 546 551 128.6
C 12 2 104462 808.02 546 551 128.6
D 10 118 671910 5260.12 526 511 127.6
D 1 52 503638 3941.78 526 511 127.6
D 2 249 204048 1594.62 526 511 127.6

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