ASTROSAT CZTI

Data Quality Report

Orbit 49801

Creation date: 2024-12-13T12:49:55.494654
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/AS1A13_037T01_9000006440_49801cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49801cztM0_level2_quad_clean.evt
Size (bytes)1,226,632,32056,021,760
Size1.1 GB 53.4 MB
Events in quadrant A16,067,435336,982
Events in quadrant B5,917,058696,982
Events in quadrant C5,154,1821,762
Events in quadrant D17,718,217158,269

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0526290
B0224670
C0205190
D0574120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7069546777.337672%
B70706148.684583%
C70707070100.000000%
D7069705799.830245%

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 7068 7068 5252 5252 74.31% 74.31%
B 7070 7070 450 450 6.36% 6.36%
C 7069 7069 8 8 0.11% 0.11%
D 7068 7068 6846 6846 96.86% 96.86%

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 0 98 9329878 81350.57 398 385 114.7
A 15 63 748054 6519.46 398 385 114.7
A 3 130 574731 5008.14 398 385 114.7
B 2 176 1335730 8575.74 726 704 155.7
B 10 28 396810 2544.45 726 704 155.7
B 10 44 281988 1806.87 726 704 155.7
C 15 147 3852996 431420.92 9 9 8.9
C 15 197 230228 25777.74 9 9 8.9
C 15 174 195199 21855.52 9 9 8.9
D 15 168 4595061 61602.35 214 204 74.6
D 7 61 2186802 29315.29 214 204 74.6
D 7 126 1149537 15408.88 214 204 74.6

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