ASTROSAT CZTI

Data Quality Report

Orbit 42750

Creation date: 2024-06-27T22:43:48.254149
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/AS1A05_013T01_9000005822_42750cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42750cztM0_level2_quad_clean.evt
Size (bytes)381,424,32090,158,400
Size363.8 MB 86.0 MB
Events in quadrant A3,038,754622,424
Events in quadrant B2,467,815633,286
Events in quadrant C5,696,254570,013
Events in quadrant D2,531,017557,196

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120162
B0103902
C0204452
D0109132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4955410.827447%
B4955521.049445%
C495551610.413724%
D4955601.210898%

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 7078 4955 26 26 0.37% 0.52%
B 7078 4956 42 42 0.59% 0.85%
C 7078 4956 528 528 7.46% 10.65%
D 7078 4956 49 49 0.69% 0.99%

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 516623 4299.51 588 578 120.0
A 13 248 175710 1459.14 588 578 120.0
A 12 189 31387 256.69 588 578 120.0
B 5 172 112745 994.74 583 569 112.8
B 0 156 38195 333.66 583 569 112.8
B 12 111 13770 117.06 583 569 112.8
C 0 239 3270986 25374.99 560 562 128.9
C 15 214 201815 1561.51 560 562 128.9
C 14 254 27304 207.49 560 562 128.9
D 2 249 167779 1210.01 572 557 138.2
D 12 233 41263 294.55 572 557 138.2
D 12 6 38522 274.71 572 557 138.2

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