ASTROSAT CZTI

Data Quality Report

Orbit 42552

Creation date: 2024-06-27T22:41:32.437085
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_102T01_9000005812_42552cztM0_level2.fits modeM0/AS1A12_102T01_9000005812_42552cztM0_level2_quad_clean.evt
Size (bytes)361,474,56096,053,760
Size344.7 MB 91.6 MB
Events in quadrant A3,133,474644,343
Events in quadrant B2,608,325652,870
Events in quadrant C2,697,432625,165
Events in quadrant D4,475,647568,123

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130432
B0122472
C0120402
D0178342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5981130.217355%
B5981190.317673%
C598160.100318%
D59812223.711754%

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 7263 5982 5 5 0.07% 0.08%
B 7263 5982 6 6 0.08% 0.10%
C 7263 5982 2 2 0.03% 0.03%
D 7263 5982 174 174 2.40% 2.91%

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 617536 4750.35 633 617 129.9
A 2 79 41679 316.18 633 617 129.9
A 15 223 9884 71.36 633 617 129.9
B 0 186 58344 477.64 628 609 120.9
B 0 245 27129 219.4 628 609 120.9
B 5 172 23418 188.7 628 609 120.9
C 15 214 250930 1737.26 618 621 144.1
C 12 249 18756 125.87 618 621 144.1
C 3 233 8969 57.94 618 621 144.1
D 2 16 1125242 7450.77 613 593 150.9
D 13 249 258343 1707.59 613 593 150.9
D 1 47 232714 1537.79 613 593 150.9

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