ASTROSAT CZTI

Data Quality Report

Orbit 53523

Creation date: 2025-08-20T12:33:50.074917
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_004T04_9000006500_53523cztM0_level2.fits modeM0/AS1A14_004T04_9000006500_53523cztM0_level2_quad_clean.evt
Size (bytes)1,436,860,800166,754,880
Size1.3 GB 159.0 MB
Events in quadrant A11,026,1111,179,807
Events in quadrant B6,790,3311,321,500
Events in quadrant C25,705,910533,704
Events in quadrant D8,657,6251,111,726

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416703
B0294593
C08529110
D0350383

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1304710868.323753%
B130473923.004522%
C13046782059.941745%
D130475624.307504%

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 14817 13049 720 720 4.86% 5.52%
B 14817 13049 116 116 0.78% 0.89%
C 14817 13048 7175 7175 48.42% 54.99%
D 14817 13050 398 398 2.69% 3.05%

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 63 2050565 5927.54 1403 1370 345.7
A 15 174 1534225 4433.96 1403 1370 345.7
A 3 62 1489138 4303.54 1403 1370 345.7
B 2 249 423539 1413.51 1413 1359 298.7
B 5 185 297774 992.44 1413 1359 298.7
B 1 255 114072 377.38 1413 1359 298.7
C 7 64 10652801 42327.07 909 902 251.7
C 1 241 7749833 30791.65 909 902 251.7
C 15 224 3097768 12305.91 909 902 251.7
D 12 1 704526 1798.23 1382 1326 391.1
D 6 239 532071 1357.23 1382 1326 391.1
D 2 153 403584 1028.66 1382 1326 391.1

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