ASTROSAT CZTI

Data Quality Report

Orbit 53823

Creation date: 2025-09-09T17:25:47.590370
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/AS1A14_022T04_9000006506_53823cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53823cztM0_level2_quad_clean.evt
Size (bytes)608,814,720111,363,840
Size580.6 MB 106.2 MB
Events in quadrant A4,176,180737,540
Events in quadrant B4,315,787790,772
Events in quadrant C5,899,997681,847
Events in quadrant D7,528,948610,415

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182731
B0185201
C0231511
D0278601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79342232.810688%
B79341942.445173%
C79344876.138140%
D793498112.364507%

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 7949 7935 139 139 1.75% 1.75%
B 7949 7935 63 63 0.79% 0.79%
C 7949 7935 386 386 4.86% 4.86%
D 7949 7935 939 939 11.81% 11.83%

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 8 567485 2720.99 852 830 208.3
A 5 243 120017 572.32 852 830 208.3
A 8 249 75414 358.14 852 830 208.3
B 10 254 412223 2276.67 843 813 180.7
B 5 185 257047 1417.95 843 813 180.7
B 5 250 66523 363.63 843 813 180.7
C 15 224 1873883 8425.74 810 799 222.3
C 1 241 370261 1661.96 810 799 222.3
C 7 64 162999 729.63 810 799 222.3
D 8 176 3371413 15094.23 791 755 223.3
D 2 172 203790 909.22 791 755 223.3
D 3 144 173910 775.41 791 755 223.3

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