ASTROSAT CZTI

Data Quality Report

Orbit 20190725_A05_229T02_9000003060_level2

Creation date: 2025-12-02T18:47:23.588905
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_229T02_9000003060cztM0_level2.fits modeM0/AS1A05_229T02_9000003060cztM0_level2_quad_clean.evt
Size (bytes)1,209,260,1601,130,719,680
Size1.1 GB 1.1 GB
Events in quadrant A7,608,3386,903,333
Events in quadrant B7,212,4496,853,573
Events in quadrant C7,330,1206,595,641
Events in quadrant D6,107,9765,533,093

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02601730
B02713910
C02584890
D03669180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024880
B024900
C025000
D024900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02190
B02190
C02190
D02190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12211413231.083414%
B12211519961.634525%
C12210816541.354539%
D1214721278310.523413%

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 143940 121464 0 0 0.00% 0.00%
B 143941 121424 0 0 0.00% 0.00%
C 143926 121398 0 0 0.00% 0.00%
D 143919 120570 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 7248 11.17 1981 1861 482.4
A 7 110 6047 8.68 1981 1861 482.4
A 0 30 5779 8.12 1981 1861 482.4
B 2 9 5819 10.73 1908 1825 372.3
B 2 8 4991 8.5 1908 1825 372.3
B 5 128 4791 7.97 1908 1825 372.3
C 12 241 5068 6.61 1938 1817 491.9
C 9 209 4992 6.45 1938 1817 491.9
C 3 126 4929 6.33 1938 1817 491.9
D 3 14 4346 5.94 1746 1595 463.1
D 7 3 4280 5.8 1746 1595 463.1
D 6 67 4269 5.77 1746 1595 463.1

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