ASTROSAT CZTI

Data Quality Report

Orbit 42004

Creation date: 2024-06-27T22:35:37.568376
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_011T26_9000005732_42004cztM0_level2.fits modeM0/AS1A12_011T26_9000005732_42004cztM0_level2_quad_clean.evt
Size (bytes)717,857,280167,561,280
Size684.6 MB 159.8 MB
Events in quadrant A6,104,7781,123,401
Events in quadrant B5,644,1941,128,378
Events in quadrant C4,885,1951,109,046
Events in quadrant D9,110,082972,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251243
B0245453
C0216023
D0344323

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10688330.308757%
B106882602.432635%
C1068920.018711%
D106897567.072692%

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 13465 10690 9 9 0.07% 0.08%
B 13465 10690 220 220 1.63% 2.06%
C 13466 10691 0 0 0.00% 0.00%
D 13466 10691 662 662 4.92% 6.19%

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 1049533 4497.05 1138 1115 233.1
A 2 79 302421 1292.41 1138 1115 233.1
A 12 189 176168 750.87 1138 1115 233.1
B 0 186 775560 3627.4 1115 1086 213.5
B 0 190 332298 1551.3 1115 1086 213.5
B 5 255 68001 313.41 1115 1086 213.5
C 15 214 436647 1676.96 1114 1123 259.7
C 8 79 25697 94.62 1114 1123 259.7
C 12 249 22802 83.47 1114 1123 259.7
D 13 249 2054467 7742.68 1085 1056 265.2
D 1 52 1991475 7505.15 1085 1056 265.2
D 10 199 398977 1500.42 1085 1056 265.2

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