ASTROSAT CZTI

Data Quality Report

Orbit 53645

Creation date: 2025-08-28T16:33:10.681136
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_53645cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53645cztM0_level2_quad_clean.evt
Size (bytes)1,038,977,28075,585,600
Size990.8 MB 72.1 MB
Events in quadrant A8,560,827524,633
Events in quadrant B7,027,676613,230
Events in quadrant C14,128,242209,461
Events in quadrant D8,238,732484,590

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299632
B0253242
C0463409
D0290192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6541180427.579881%
B6541132320.226265%
C6540466271.284404%
D6540151623.180428%

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 7651 6542 1510 1510 19.74% 23.08%
B 7650 6541 835 835 10.92% 12.77%
C 7650 6539 4159 4159 54.37% 63.60%
D 7650 6541 1247 1247 16.30% 19.06%

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 4308288 25023.06 694 676 172.1
A 4 191 675774 3921.67 694 676 172.1
A 15 174 336442 1950.48 694 676 172.1
B 4 206 2132765 14382.9 696 675 148.2
B 5 172 848879 5721.91 696 675 148.2
B 7 0 413673 2786.05 696 675 148.2
C 1 241 9355713 80112.01 420 417 116.8
C 15 224 1388567 11887.12 420 417 116.8
C 13 49 983604 8419.3 420 417 116.8
D 10 172 2472580 12963.6 672 644 190.7
D 8 176 2358048 12362.96 672 644 190.7
D 3 224 229883 1202.2 672 644 190.7

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