ASTROSAT CZTI

Data Quality Report

Orbit 12097

Creation date: 2024-06-27T16:22:21.320122
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/AS1G08_065T01_9000001796_12097cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12097cztM0_level2_quad_clean.evt
Size (bytes)2,083,227,840340,024,320
Size1.9 GB 324.3 MB
Events in quadrant A14,431,5992,138,187
Events in quadrant B17,721,4722,106,164
Events in quadrant C12,466,0432,121,457
Events in quadrant D16,612,5322,037,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0608866
B0703735
C0562445
D0673785

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05620
B05620
C05620
D05620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A275535281.916307%
B2755313524.906907%
C275532020.733133%
D275535802.105034%

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 31424 27554 84 84 0.27% 0.30%
B 31424 27556 633 633 2.01% 2.30%
C 31424 27557 18 18 0.06% 0.07%
D 31424 27556 320 320 1.02% 1.16%

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 1 162 489521 743.9 3266 3203 653.7
A 13 251 303523 459.39 3266 3203 653.7
A 1 178 194607 292.78 3266 3203 653.7
B 4 239 3854531 6357.42 3216 3140 605.8
B 15 204 487569 799.64 3216 3140 605.8
B 11 51 409151 670.2 3216 3140 605.8
C 15 208 66221 87.23 3157 3169 722.8
C 14 234 60689 79.58 3157 3169 722.8
C 13 61 23434 28.04 3157 3169 722.8
D 8 195 1559812 2072.04 3147 3062 751.3
D 1 52 1143822 1518.36 3147 3062 751.3
D 14 34 683568 905.76 3147 3062 751.3

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