ASTROSAT CZTI

Data Quality Report

Orbit 37434

Creation date: 2024-06-27T21:39:56.749738
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/AS1A09_002T01_9000005322_37434cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37434cztM0_level2_quad_clean.evt
Size (bytes)502,600,32071,668,800
Size479.3 MB 68.3 MB
Events in quadrant A2,696,187467,845
Events in quadrant B3,172,304474,652
Events in quadrant C3,311,002473,142
Events in quadrant D5,710,453410,873

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107853
B0123482
C0127242
D0202742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4894110.224765%
B48941212.472415%
C48941232.513282%
D489480316.407846%

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 7017 4895 3 3 0.04% 0.06%
B 7017 4895 93 93 1.33% 1.90%
C 7017 4895 108 108 1.54% 2.21%
D 7017 4895 825 825 11.76% 16.85%

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 267193 2181.04 611 601 122.2
A 12 189 31585 253.49 611 601 122.2
A 13 6 12851 100.22 611 601 122.2
B 0 189 220630 1946.68 606 592 113.0
B 5 255 138655 1221.45 606 592 113.0
B 5 200 128149 1128.5 606 592 113.0
C 14 254 641870 4748.39 599 605 135.0
C 15 214 212205 1566.84 599 605 135.0
C 0 10 104836 771.8 599 605 135.0
D 12 227 3022740 21521.32 577 563 140.4
D 2 153 116402 824.9 577 563 140.4
D 2 249 59365 418.74 577 563 140.4

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