ASTROSAT CZTI

Data Quality Report

Orbit 38131

Creation date: 2024-06-27T21:48:48.751142
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/AS1C07_001T12_9000005366_38131cztM0_level2.fits modeM0/AS1C07_001T12_9000005366_38131cztM0_level2_quad_clean.evt
Size (bytes)296,239,68086,895,360
Size282.5 MB 82.9 MB
Events in quadrant A2,833,684588,816
Events in quadrant B2,432,963601,098
Events in quadrant C2,429,316571,071
Events in quadrant D2,878,595518,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115153
B0107782
C0103912
D0121062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5018160.318852%
B5018500.996413%
C5018190.378637%
D50181032.052611%

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 7051 5019 12 12 0.17% 0.24%
B 7051 5019 36 36 0.51% 0.72%
C 7051 5019 12 12 0.17% 0.24%
D 7051 5019 100 100 1.42% 1.99%

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 356286 3157.3 556 545 112.7
A 12 16 251514 2227.42 556 545 112.7
A 12 194 40201 351.96 556 545 112.7
B 0 229 156163 1467.62 552 537 106.0
B 5 172 48771 454.87 552 537 106.0
B 15 85 28867 267.16 552 537 106.0
C 15 214 211706 1680.91 536 539 125.6
C 14 254 67668 534.35 536 539 125.6
C 0 10 23599 183.56 536 539 125.6
D 13 249 277717 2123.88 531 516 130.5
D 1 52 265709 2031.87 531 516 130.5
D 13 138 70297 534.65 531 516 130.5

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