ASTROSAT CZTI

Data Quality Report

Orbit 57862

Creation date: 2026-06-08T11:12:22.658306
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_125T11_9000006582_57862cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57862cztM0_level2_quad_clean.evt
Size (bytes)567,204,480110,528,640
Size540.9 MB 105.4 MB
Events in quadrant A3,747,621745,226
Events in quadrant B3,783,882780,576
Events in quadrant C7,749,401614,514
Events in quadrant D5,097,184652,983

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170533
B0172203
C0286143
D0206533

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79522172.728873%
B79533654.589463%
C7953133516.786118%
D79533123.923048%

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 8927 7953 10 10 0.11% 0.13%
B 8928 7954 39 39 0.44% 0.49%
C 8928 7954 987 987 11.06% 12.41%
D 8928 7954 87 87 0.97% 1.09%

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 10 251 233913 1090.88 872 848 213.6
A 7 64 87039 403.42 872 848 213.6
A 3 128 31075 141.48 872 848 213.6
B 5 172 69669 380.8 854 821 180.8
B 7 252 45470 246.95 854 821 180.8
B 6 51 45249 245.73 854 821 180.8
C 15 224 2192853 10115.03 803 794 216.7
C 9 38 1805522 8327.73 803 794 216.7
C 12 2 176952 812.86 803 794 216.7
D 12 110 1103206 4733.32 836 797 232.9
D 3 224 304711 1304.89 836 797 232.9
D 3 12 66968 284.11 836 797 232.9

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