ASTROSAT CZTI

Data Quality Report

Orbit 41008

Creation date: 2024-06-27T22:23:49.000702
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_042T01_9000005588_41008cztM0_level2.fits modeM0/AS1A12_042T01_9000005588_41008cztM0_level2_quad_clean.evt
Size (bytes)310,446,72090,561,600
Size296.1 MB 86.4 MB
Events in quadrant A2,935,132612,580
Events in quadrant B2,403,089627,942
Events in quadrant C2,792,381586,630
Events in quadrant D2,941,513537,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119343
B0108382
C0116662
D0124602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A538480.148588%
B5384110.204309%
C5384340.631501%
D53841001.857355%

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 7147 5385 4 4 0.06% 0.07%
B 7147 5385 3 3 0.04% 0.06%
C 7147 5385 34 34 0.48% 0.63%
D 7147 5385 94 94 1.32% 1.75%

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 539359 4368.39 601 588 123.3
A 12 189 68884 553.75 601 588 123.3
A 13 254 8330 62.77 601 588 123.3
B 0 186 22966 194.82 597 580 114.9
B 5 255 16683 140.14 597 580 114.9
B 12 111 14479 120.96 597 580 114.9
C 15 214 233482 1735.81 580 583 134.2
C 12 249 144635 1073.63 580 583 134.2
C 14 254 72859 538.68 580 583 134.2
D 13 249 234254 1688.63 578 562 138.4
D 12 233 183481 1321.75 578 562 138.4
D 2 249 59243 424.02 578 562 138.4

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