ASTROSAT CZTI

Data Quality Report

Orbit 20220327_A11_047T09_9000005028_level2

Creation date: 2026-01-02T07:34:46.031864
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/AS1A11_047T09_9000005028cztM0_level2.fits modeM0/AS1A11_047T09_9000005028cztM0_level2_quad_clean.evt
Size (bytes)738,944,640636,816,960
Size704.7 MB 607.3 MB
Events in quadrant A4,033,7543,103,690
Events in quadrant B4,482,8723,913,347
Events in quadrant C4,582,2103,787,913
Events in quadrant D3,800,8223,011,917

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016280
B016280
C016280
D016280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02830
B02830
C02830
D02840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03152530
B01945110
C01784440
D03205220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A797092044125.644532%
B7970920972.630820%
C797098291.040033%
D79709824910.348894%

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 112587 79483 0 0 0.00% 0.00%
B 112587 79704 0 0 0.00% 0.00%
C 112587 79704 0 0 0.00% 0.00%
D 112587 79588 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 3331 9.09 1053 991 257.4
A 9 19 3250 8.78 1053 991 257.4
A 0 29 3235 8.72 1053 991 257.4
B 2 9 4010 12.41 1187 1135 231.6
B 3 80 3407 9.81 1187 1135 231.6
B 2 8 3199 8.91 1187 1135 231.6
C 1 81 3693 8.34 1212 1139 306.2
C 1 80 3559 7.9 1212 1139 306.2
C 3 202 3540 7.84 1212 1139 306.2
D 4 160 2771 6.17 1089 997 287.4
D 7 3 2754 6.11 1089 997 287.4
D 10 189 2690 5.89 1089 997 287.4

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