ASTROSAT CZTI

Data Quality Report

Orbit 53636

Creation date: 2025-08-28T02:36:46.708385
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/AS1A14_022T05_9000006504_53636cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53636cztM0_level2_quad_clean.evt
Size (bytes)1,239,569,28086,780,160
Size1.2 GB 82.8 MB
Events in quadrant A9,356,407594,869
Events in quadrant B12,723,455509,556
Events in quadrant C13,970,792404,612
Events in quadrant D9,225,156567,385

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332270
B0433520
C0468500
D0329040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7914199325.183220%
B7914336142.469042%
C7914384348.559515%
D7915160020.214782%

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 7914 7914 1699 1699 21.47% 21.47%
B 7914 7914 2618 2618 33.08% 33.08%
C 7914 7910 3458 3458 43.69% 43.72%
D 7915 7915 1485 1485 18.76% 18.76%

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 3 78 4032900 20842.75 764 743 193.5
A 4 191 915225 4727.08 764 743 193.5
A 3 63 380923 1965.2 764 743 193.5
B 15 20 6724664 43500.99 717 693 154.6
B 4 206 1097304 7094.57 717 693 154.6
B 7 0 796152 5146.25 717 693 154.6
C 1 241 7079951 41177.45 612 607 171.9
C 15 224 2320212 13492.13 612 607 171.9
C 13 3 655679 3810.27 612 607 171.9
D 8 176 2503900 11198.7 774 741 223.5
D 10 172 1367307 6113.78 774 741 223.5
D 3 12 485635 2169.33 774 741 223.5

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