ASTROSAT CZTI

Data Quality Report

Orbit 20220826_T05_048T01_9000005318_level2

Creation date: 2026-01-05T03:09:01.002162
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/AS1T05_048T01_9000005318cztM0_level2.fits modeM0/AS1T05_048T01_9000005318cztM0_level2_quad_clean.evt
Size (bytes)735,828,480748,632,960
Size701.7 MB 714.0 MB
Events in quadrant A4,549,6424,864,457
Events in quadrant B4,307,5904,815,797
Events in quadrant C4,489,7704,760,991
Events in quadrant D3,433,0762,735,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01689540
B01911950
C01757980
D04006470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016400
B016400
C016400
D016400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A801222020.252116%
B8012425533.186311%
C801218411.049662%
D801252128426.563495%

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 108896 80126 0 0 0.00% 0.00%
B 108896 80076 0 0 0.00% 0.00%
C 108896 80117 0 0 0.00% 0.00%
D 108896 80069 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 7 110 3855 9.32 1188 1116 293.8
A 9 19 3615 8.5 1188 1116 293.8
A 0 29 3564 8.33 1188 1116 293.8
B 2 9 3648 11.32 1144 1095 225.5
B 3 80 3316 9.85 1144 1095 225.5
B 5 128 3076 8.79 1144 1095 225.5
C 3 203 3745 8.65 1187 1114 304.2
C 3 202 3684 8.45 1187 1114 304.2
C 1 81 3641 8.31 1187 1114 304.2
D 7 3 2620 6.53 983 897 264.0
D 10 189 2548 6.25 983 897 264.0
D 4 160 2528 6.18 983 897 264.0

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