ASTROSAT CZTI

Data Quality Report

Orbit 53904

Creation date: 2025-09-15T02:27:52.309087
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/AS1A14_057T04_9000006508_53904cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53904cztM0_level2_quad_clean.evt
Size (bytes)775,414,08074,836,800
Size739.5 MB 71.4 MB
Events in quadrant A3,624,505623,189
Events in quadrant B3,824,572665,415
Events in quadrant C6,707,380521,164
Events in quadrant D14,050,10110,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153621
B0157531
C0243901
D0461252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63871662.599029%
B63871141.784876%
C6388107316.797120%
D6387629698.575231%

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 7512 6388 141 141 1.88% 2.21%
B 7512 6388 52 52 0.69% 0.81%
C 7513 6388 878 878 11.69% 13.74%
D 7511 6386 4519 4519 60.17% 70.76%

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 12 115 575195 3372.27 687 671 170.4
A 10 253 81231 472.86 687 671 170.4
A 8 249 75919 441.68 687 671 170.4
B 7 0 600788 4152.99 683 660 144.5
B 10 247 128364 883.73 683 660 144.5
B 5 185 107578 739.89 683 660 144.5
C 15 224 2964039 16999.53 628 620 174.3
C 15 174 532235 3049.59 628 620 174.3
C 2 12 249898 1429.97 628 620 174.3
D 8 176 13328195 405763.65 108 103 32.8
D 2 172 140131 4263.05 108 103 32.8
D 10 172 27503 834.17 108 103 32.8

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