ASTROSAT CZTI

Data Quality Report

Orbit 37712

Creation date: 2024-06-27T21:43:28.463090
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_9000005342_37712cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37712cztM0_level2_quad_clean.evt
Size (bytes)664,225,92076,622,400
Size633.5 MB 73.1 MB
Events in quadrant A7,835,810456,834
Events in quadrant B3,087,807500,104
Events in quadrant C2,886,275512,962
Events in quadrant D5,921,713451,423

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270573
B0129302
C0120432
D0214922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5696125922.103230%
B56961001.755618%
C5696370.649579%
D569682614.501404%

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 9551 5695 1380 1380 14.45% 24.23%
B 9551 5695 82 82 0.86% 1.44%
C 9551 5695 24 24 0.25% 0.42%
D 9551 5695 980 980 10.26% 17.21%

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 15 222 4972885 40051.33 614 602 124.1
A 10 83 298349 2398.33 614 602 124.1
A 9 143 148633 1192.38 614 602 124.1
B 5 255 289900 2390.49 637 620 121.0
B 5 172 155239 1277.71 637 620 121.0
B 4 232 38932 316.59 637 620 121.0
C 15 214 258360 1764.18 633 638 146.1
C 0 10 132832 904.91 633 638 146.1
C 14 254 28370 189.83 633 638 146.1
D 12 227 2714514 18712.26 597 581 145.0
D 2 250 450797 3104.19 597 581 145.0
D 13 249 284147 1955.16 597 581 145.0

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