ASTROSAT CZTI

Data Quality Report

Orbit 20230716_A11_032T04_9000005766_level2

Creation date: 2023-07-21T13:33:03.862952
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_032T04_9000005766cztM0_level2.fits modeM0/AS1A11_032T04_9000005766cztM0_level2_quad_clean.evt
Size (bytes)572,402,880567,262,080
Size545.9 MB 541.0 MB
Events in quadrant A3,386,7303,317,610
Events in quadrant B3,289,0663,341,283
Events in quadrant C3,370,0123,196,617
Events in quadrant D2,882,1922,917,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01518310
B01366280
C01292630
D01577530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02630
D02630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013160
B013160
C013160
D013160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6424512791.990816%
B642465700.887215%
C64246290.045139%
D6424615222.369019%

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 116101 64216 0 0 0.00% 0.00%
B 116101 64211 0 0 0.00% 0.00%
C 116101 64247 0 0 0.00% 0.00%
D 116101 64200 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 2796 8.83 883 827 222.9
A 9 19 2790 8.81 883 827 222.9
A 0 29 2768 8.71 883 827 222.9
B 2 9 2871 12.13 868 827 168.6
B 3 80 2324 8.88 868 827 168.6
B 5 128 2301 8.74 868 827 168.6
C 1 81 2791 8.59 890 829 228.5
C 1 80 2728 8.31 890 829 228.5
C 3 202 2686 8.13 890 829 228.5
D 4 160 2180 6.41 826 752 222.7
D 10 189 2174 6.38 826 752 222.7
D 10 113 2103 6.06 826 752 222.7

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