ASTROSAT CZTI

Data Quality Report

Orbit 20231121_A13_029T01_9000005940_level2

Creation date: 2023-11-23T16:47:57.498162
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/AS1A13_029T01_9000005940cztM0_level2.fits modeM0/AS1A13_029T01_9000005940cztM0_level2_quad_clean.evt
Size (bytes)1,299,634,5601,303,585,920
Size1.2 GB 1.2 GB
Events in quadrant A7,728,6827,812,379
Events in quadrant B7,641,3868,013,536
Events in quadrant C7,716,2207,353,539
Events in quadrant D6,389,3286,424,129

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029260
B029260
C029260
D029260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03831490
B02972270
C03224750
D04204700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01830
B01830
C01830
D01830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14417330972.148114%
B14417321111.464213%
C14417330732.131467%
D144173115898.038260%

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 162193 144174 0 0 0.00% 0.00%
B 162193 144172 0 0 0.00% 0.00%
C 162193 144016 0 0 0.00% 0.00%
D 162193 143621 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 6601 9.14 2018 1877 516.8
A 15 236 6163 8.29 2018 1877 516.8
A 0 29 6062 8.1 2018 1877 516.8
B 2 9 7014 12.7 2010 1905 402.2
B 3 17 5670 9.36 2010 1905 402.2
B 2 8 5653 9.32 2010 1905 402.2
C 1 80 5841 7.46 2042 1894 528.9
C 1 81 5841 7.46 2042 1894 528.9
C 3 202 5816 7.42 2042 1894 528.9
D 6 79 4636 5.83 1834 1661 510.7
D 3 14 4592 5.74 1834 1661 510.7
D 6 38 4577 5.71 1834 1661 510.7

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