ASTROSAT CZTI

Data Quality Report

Orbit 20190916_A05_117T01_9000003166_level2

Creation date: 2025-12-03T17:01:37.848859
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/AS1A05_117T01_9000003166cztM0_level2.fits modeM0/AS1A05_117T01_9000003166cztM0_level2_quad_clean.evt
Size (bytes)409,055,040410,978,880
Size390.1 MB 391.9 MB
Events in quadrant A2,505,0142,493,898
Events in quadrant B2,406,0782,498,918
Events in quadrant C2,433,5482,376,607
Events in quadrant D2,107,0662,140,943

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08760
B08760
C08760
D08760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0883500
B0886110
C0890470
D01151150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A427544210.984703%
B427545461.277073%
C427546211.452496%
D4275416083.761052%

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 47998 42744 0 0 0.00% 0.00%
B 47999 42745 0 0 0.00% 0.00%
C 47998 42744 0 0 0.00% 0.00%
D 47998 42741 0 0 0.00% 0.00%

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 0 29 2441 11.18 651 608 164.0
A 7 110 2081 8.98 651 608 164.0
A 0 30 1944 8.15 651 608 164.0
B 2 9 2021 11.09 633 602 127.9
B 2 8 1655 8.23 633 602 127.9
B 14 254 1614 7.91 633 602 127.9
C 1 80 1951 8.21 640 596 165.1
C 1 81 1923 8.04 640 596 165.1
C 12 241 1709 6.74 640 596 165.1
D 3 14 1623 6.7 601 547 160.7
D 10 189 1483 5.82 601 547 160.7
D 6 38 1453 5.64 601 547 160.7

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