ASTROSAT CZTI

Data Quality Report

Orbit 11888

Creation date: 2024-06-27T16:19:38.470966
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/AS1T01_209T01_9000001758_11888cztM0_level2.evt modeM0/AS1T01_209T01_9000001758_11888cztM0_level2_quad_clean.evt
Size (bytes)295,061,76058,314,240
Size281.4 MB 55.6 MB
Events in quadrant A2,226,043369,517
Events in quadrant B2,305,302374,954
Events in quadrant C1,715,295377,290
Events in quadrant D2,410,592355,882

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092800
B095010
C082060
D098080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4083771.885868%
B4083741.812393%
C408310.024492%
D4083651.591967%

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 4084 4084 42 42 1.03% 1.03%
B 4084 4084 55 55 1.35% 1.35%
C 4084 4084 1 1 0.02% 0.02%
D 4084 4084 76 76 1.86% 1.86%

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 5 16 124274 1347.47 447 438 91.9
A 8 15 84069 910.0 447 438 91.9
A 1 162 79821 863.77 447 438 91.9
B 4 239 366516 4270.19 448 438 85.7
B 15 204 79795 925.67 448 438 85.7
B 10 245 22668 259.31 448 438 85.7
C 0 207 12359 116.98 436 438 101.9
C 13 61 3346 28.54 436 438 101.9
C 14 234 1693 12.32 436 438 101.9
D 12 233 268173 2498.56 433 420 107.2
D 8 195 148585 1382.62 433 420 107.2
D 1 52 108284 1006.54 433 420 107.2

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