ASTROSAT CZTI

Data Quality Report

Orbit 20190711_A05_198T01_9000003024_level2

Creation date: 2025-12-02T00:11:54.586640
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_198T01_9000003024cztM0_level2.fits modeM0/AS1A05_198T01_9000003024cztM0_level2_quad_clean.evt
Size (bytes)667,131,840580,181,760
Size636.2 MB 553.3 MB
Events in quadrant A4,129,9943,438,435
Events in quadrant B3,955,2783,412,264
Events in quadrant C4,044,7883,205,975
Events in quadrant D3,504,9122,944,551

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013580
B013580
C013600
D013580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01392410
B01487780
C01471230
D01649500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A666137601.140918%
B6661512781.918487%
C6660112571.887359%
D6660624913.739903%

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 80900 66662 0 0 0.00% 0.00%
B 80901 66659 0 0 0.00% 0.00%
C 80901 66651 0 0 0.00% 0.00%
D 80901 66573 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 3899 10.91 1075 1008 265.0
A 7 110 3295 8.63 1075 1008 265.0
A 9 19 3079 7.81 1075 1008 265.0
B 2 9 3199 10.63 1045 996 207.2
B 2 8 2716 8.3 1045 996 207.2
B 5 128 2568 7.59 1045 996 207.2
C 1 81 3003 7.35 1067 998 272.8
C 1 80 2940 7.12 1067 998 272.8
C 12 241 2786 6.55 1067 998 272.8
D 4 246 2722 6.81 1000 911 266.0
D 3 14 2496 5.96 1000 911 266.0
D 6 231 2442 5.76 1000 911 266.0

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