ASTROSAT CZTI

Data Quality Report

Orbit 39043

Creation date: 2024-06-27T21:59:40.817965
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_077T06_9000005430_39043cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39043cztM0_level2_quad_clean.evt
Size (bytes)355,343,04084,830,400
Size338.9 MB 80.9 MB
Events in quadrant A5,277,667473,502
Events in quadrant B2,349,389619,617
Events in quadrant C2,409,723592,092
Events in quadrant D2,738,492543,090

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188023
B0100042
C0100172
D0115242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4852105921.826051%
B485290.185491%
C485250.103050%
D4852761.566364%

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 6945 4853 1023 1023 14.73% 21.08%
B 6945 4853 4 4 0.06% 0.08%
C 6945 4853 2 2 0.03% 0.04%
D 6945 4853 55 55 0.79% 1.13%

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 15 222 2827303 28047.31 500 491 100.8
A 10 83 325530 3225.0 500 491 100.8
A 6 10 159611 1578.77 500 491 100.8
B 0 190 72074 667.01 562 547 107.2
B 5 172 38635 355.18 562 547 107.2
B 0 230 23244 211.66 562 547 107.2
C 15 214 204662 1574.13 557 561 129.7
C 0 10 12344 90.88 557 561 129.7
C 15 208 9955 72.45 557 561 129.7
D 1 47 142591 1050.67 551 536 135.2
D 12 233 135889 1001.11 551 536 135.2
D 12 227 128591 947.13 551 536 135.2

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