ASTROSAT CZTI

Data Quality Report

Orbit 39719

Creation date: 2024-06-27T22:08:10.399021
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_022T01_9000005494_39719cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39719cztM0_level2_quad_clean.evt
Size (bytes)538,773,12083,629,440
Size513.8 MB 79.8 MB
Events in quadrant A3,003,516632,898
Events in quadrant B2,954,378633,189
Events in quadrant C9,470,986366,064
Events in quadrant D4,099,511525,428

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120933
B0122062
C0318352
D0157062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5345160.299345%
B53451262.357343%
C5345238244.565014%
D53464267.968575%

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 7139 5346 7 7 0.10% 0.13%
B 7139 5346 86 86 1.20% 1.61%
C 7139 5346 2086 2086 29.22% 39.02%
D 7140 5347 352 352 4.93% 6.58%

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 451339 3595.18 614 603 125.4
A 15 174 165391 1314.39 614 603 125.4
A 13 254 7822 57.58 614 603 125.4
B 5 172 318508 2739.67 598 584 116.0
B 5 255 220303 1893.4 598 584 116.0
B 0 190 40680 345.52 598 584 116.0
C 9 187 5901238 52957.81 475 476 111.4
C 15 208 844233 7572.5 475 476 111.4
C 14 254 661012 5928.14 475 476 111.4
D 12 227 1268733 8963.65 578 561 141.5
D 12 233 262003 1847.91 578 561 141.5
D 2 250 178768 1259.59 578 561 141.5

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