ASTROSAT CZTI

Data Quality Report

Orbit 58678

Creation date: 2026-08-02T14:42:11.175061
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_004T06_9000006594_58678cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58678cztM0_level2_quad_clean.evt
Size (bytes)592,715,520131,486,400
Size565.3 MB 125.4 MB
Events in quadrant A4,217,475882,322
Events in quadrant B7,854,009806,340
Events in quadrant C4,645,525852,977
Events in quadrant D4,513,306805,128

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192341
B0295211
C0204031
D0201451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9140300.328228%
B9140143815.733042%
C91401081.181619%
D9140650.711160%

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 9155 9141 12 12 0.13% 0.13%
B 9155 9141 1058 1058 11.56% 11.57%
C 9155 9141 78 78 0.85% 0.85%
D 9155 9141 58 58 0.63% 0.63%

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 85661 336.37 1019 991 251.7
A 3 14 81344 319.22 1019 991 251.7
A 10 17 53214 207.46 1019 991 251.7
B 5 172 1928917 9538.25 942 904 202.1
B 15 32 1815933 8979.29 942 904 202.1
B 0 186 81860 400.5 942 904 202.1
C 12 249 249232 904.97 1004 999 274.3
C 14 254 124718 451.03 1004 999 274.3
C 15 217 84701 305.15 1004 999 274.3
D 8 240 210416 746.14 997 954 280.7
D 7 222 101830 359.34 997 954 280.7
D 1 27 101260 357.31 997 954 280.7

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