ASTROSAT CZTI

Data Quality Report

Orbit 08326

Creation date: 2024-06-27T15:31:09.747689
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/AS1G07_029T01_9000001158_08326cztM0_level2.evt modeM0/AS1G07_029T01_9000001158_08326cztM0_level2_quad_clean.evt
Size (bytes)308,819,52045,835,200
Size294.5 MB 43.7 MB
Events in quadrant A2,170,419271,151
Events in quadrant B2,644,934274,789
Events in quadrant C2,138,792271,029
Events in quadrant D2,098,157261,328

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093642
B0106651
C093561
D093521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A43941864.233045%
B43943958.989531%
C43941423.231680%
D43941423.231680%

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 4564 4395 0 0 0.00% 0.00%
B 4564 4395 37 37 0.81% 0.84%
C 4564 4395 2 2 0.04% 0.05%
D 4564 4395 1 1 0.02% 0.02%

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 13 251 10286 83.04 559 545 117.3
A 15 223 6135 47.65 559 545 117.3
A 0 226 5236 39.99 559 545 117.3
B 4 81 437661 4110.44 541 528 106.3
B 0 214 34883 323.05 541 528 106.3
B 12 0 17472 159.33 541 528 106.3
C 9 54 19604 148.73 543 545 128.1
C 13 61 4197 28.5 543 545 128.1
C 3 202 1283 5.76 543 545 128.1
D 2 14 18363 133.32 543 526 133.8
D 2 234 15377 111.01 543 526 133.8
D 2 152 12528 89.71 543 526 133.8

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