ASTROSAT CZTI

Data Quality Report

Orbit 23318

Creation date: 2024-06-27T18:52:43.857177
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/AS1A07_148T02_9000003444_23318cztM0_level2.evt modeM0/AS1A07_148T02_9000003444_23318cztM0_level2_quad_clean.evt
Size (bytes)546,425,28079,755,840
Size521.1 MB 76.1 MB
Events in quadrant A3,575,953516,529
Events in quadrant B3,582,530519,650
Events in quadrant C3,814,972495,194
Events in quadrant D5,146,730442,295

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145302
B0145312
C0153542
D0194002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63201642.594937%
B63201612.547468%
C63192273.592341%
D631965610.381389%

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 7570 6320 0 0 0.00% 0.00%
B 7570 6320 2 2 0.03% 0.03%
C 7569 6319 19 19 0.25% 0.30%
D 7569 6319 544 544 7.19% 8.61%

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 6 16 15376 79.68 924 908 181.6
A 13 254 10183 51.08 924 908 181.6
A 0 226 8005 39.08 924 908 181.6
B 12 111 19115 109.07 902 883 167.1
B 0 229 17584 99.91 902 883 167.1
B 11 111 17082 96.91 902 883 167.1
C 14 238 140452 695.48 874 881 200.7
C 10 9 133929 662.97 874 881 200.7
C 5 4 77618 382.38 874 881 200.7
D 7 238 1272049 6338.06 838 816 200.6
D 1 52 540103 2688.75 838 816 200.6
D 12 233 73354 361.66 838 816 200.6

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