ASTROSAT CZTI

Data Quality Report

Orbit 36879

Creation date: 2024-06-27T21:32:43.859341
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/AS1A11_075T01_9000005244_36879cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36879cztM0_level2_quad_clean.evt
Size (bytes)389,064,96047,678,400
Size371.0 MB 45.5 MB
Events in quadrant A2,752,826359,579
Events in quadrant B831,9926,292
Events in quadrant C2,849,007361,222
Events in quadrant D4,975,383335,339

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117273
B055182
C0117102
D0185792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5410150.277264%
B54105410100.000000%
C5410561.035120%
D541056710.480591%

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 7113 5411 7 7 0.10% 0.13%
B 7112 5409 1 1 0.01% 0.02%
C 7113 5411 41 41 0.58% 0.76%
D 7113 5411 497 497 6.99% 9.18%

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 256742 1999.73 623 610 128.1
A 13 248 65493 506.57 623 610 128.1
A 13 6 9548 69.78 623 610 128.1
B 12 243 749235 173635.99 12 12 4.3
B 12 144 14253 3300.42 12 12 4.3
B 5 172 5016 1159.7 12 12 4.3
C 15 214 232879 1651.85 604 608 140.6
C 0 10 160461 1136.84 604 608 140.6
C 14 254 41592 291.47 604 608 140.6
D 12 235 1390893 9711.25 584 567 143.2
D 2 249 541493 3778.3 584 567 143.2
D 12 233 248015 1728.39 584 567 143.2

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