ASTROSAT CZTI

Data Quality Report

Orbit 20180506_G08_022T01_9000002078_level2

Creation date: 2025-11-22T05:29:39.095934
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/AS1G08_022T01_9000002078cztM0_level2.fits modeM0/AS1G08_022T01_9000002078cztM0_level2_quad_clean.evt
Size (bytes)1,202,284,8001,311,886,080
Size1.1 GB 1.2 GB
Events in quadrant A7,494,1648,571,587
Events in quadrant B6,909,8967,849,783
Events in quadrant C7,238,4147,762,983
Events in quadrant D6,179,5726,965,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025520
B025520
C025520
D025520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01810
B01810
C01810
D01820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02728320
B03498300
C02604200
D03355600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12526018741.496088%
B12526097987.822130%
C1252608300.662622%
D12526056494.509820%

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 143054 125249 0 0 0.00% 0.00%
B 143054 124907 0 0 0.00% 0.00%
C 143054 125257 0 0 0.00% 0.00%
D 143054 125233 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 7194 11.14 1950 1832 481.3
A 7 110 6116 8.9 1950 1832 481.3
A 9 19 5565 7.76 1950 1832 481.3
B 2 9 5927 11.87 1824 1745 352.4
B 5 128 4600 8.1 1824 1745 352.4
B 3 17 4578 8.04 1824 1745 352.4
C 1 80 5606 7.78 1911 1778 491.9
C 1 81 5470 7.5 1911 1778 491.9
C 12 241 5011 6.57 1911 1778 491.9
D 6 231 4448 6.06 1763 1604 469.2
D 3 14 4440 6.04 1763 1604 469.2
D 7 3 4408 5.98 1763 1604 469.2

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