ASTROSAT CZTI

Data Quality Report

Orbit 33548

Creation date: 2024-06-27T20:50:01.426793
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/AS1A11_060T01_9000004808_33548cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33548cztM0_level2_quad_clean.evt
Size (bytes)424,157,76082,774,080
Size404.5 MB 78.9 MB
Events in quadrant A2,537,393544,348
Events in quadrant B2,959,049540,406
Events in quadrant C3,099,904525,464
Events in quadrant D3,872,598508,393

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112193
B0123442
C0126152
D0153282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5541100.180473%
B5541831.497925%
C5541871.570114%
D55411172.111532%

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 7124 5542 1 1 0.01% 0.02%
B 7124 5542 58 58 0.81% 1.05%
C 7124 5542 63 63 0.88% 1.14%
D 7124 5542 119 119 1.67% 2.15%

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 7 16 10540 75.73 651 638 130.8
A 13 254 9541 68.09 651 638 130.8
A 13 6 6955 48.31 651 638 130.8
B 4 170 97676 768.18 645 628 126.3
B 0 229 95948 754.5 645 628 126.3
B 5 255 79974 628.06 645 628 126.3
C 15 214 242613 1664.25 623 628 145.4
C 0 10 231524 1587.99 623 628 145.4
C 1 23 71346 486.36 623 628 145.4
D 8 195 712871 4665.27 625 609 152.7
D 2 250 341751 2234.46 625 609 152.7
D 1 47 149771 977.0 625 609 152.7

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