ASTROSAT CZTI

Data Quality Report

Orbit 08664

Creation date: 2024-06-27T15:35:37.882585
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_024T01_9000001206_08664cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08664cztM0_level2_quad_clean.evt
Size (bytes)1,221,975,360311,497,920
Size1.1 GB 297.1 MB
Events in quadrant A8,894,8502,058,051
Events in quadrant B9,304,3072,109,383
Events in quadrant C8,180,4322,068,163
Events in quadrant D9,426,1661,975,004

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03885736
B03948735
C03705814
D04081529

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177752181.226442%
B177732801.575423%
C177841220.686010%
D177784252.390595%

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 19899 17790 34 34 0.17% 0.19%
B 19899 17788 119 119 0.60% 0.67%
C 19899 17789 26 26 0.13% 0.15%
D 19899 17790 296 296 1.49% 1.66%

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 8 5 1051836 2594.03 2001 1956 404.7
A 15 174 59830 142.99 2001 1956 404.7
A 0 254 22611 51.03 2001 1956 404.7
B 10 16 463870 1214.24 2020 1970 380.4
B 4 48 335652 877.18 2020 1970 380.4
B 0 231 118790 307.09 2020 1970 380.4
C 4 254 455795 1012.12 1953 1962 448.4
C 1 16 70770 153.45 1953 1962 448.4
C 13 61 14727 28.47 1953 1962 448.4
D 10 253 705334 1493.53 1938 1874 471.0
D 2 152 319534 674.43 1938 1874 471.0
D 7 71 290826 613.48 1938 1874 471.0

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