ASTROSAT CZTI

Data Quality Report

Orbit 54278

Creation date: 2025-10-10T08:25:02.874244
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_126T15_9000006516_54278cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54278cztM0_level2_quad_clean.evt
Size (bytes)1,457,997,120263,373,120
Size1.4 GB 251.2 MB
Events in quadrant A9,420,5401,814,668
Events in quadrant B10,273,8241,941,753
Events in quadrant C15,172,2391,481,508
Events in quadrant D17,593,5541,391,600

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0423254
B0445894
C0595764
D0657964

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195141820.932664%
B195152301.178581%
C19515250612.841404%
D19515251612.892647%

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 20954 19518 105 105 0.50% 0.54%
B 20955 19519 61 61 0.29% 0.31%
C 20955 19517 2357 2357 11.25% 12.08%
D 20955 19519 2546 2546 12.15% 13.04%

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 15 174 414213 809.26 2058 2006 509.4
A 4 3 214966 418.09 2058 2006 509.4
A 4 5 189992 369.06 2058 2006 509.4
B 7 0 843177 1938.13 2036 1959 434.0
B 8 234 340422 779.8 2036 1959 434.0
B 5 172 260498 595.66 2036 1959 434.0
C 1 241 5224417 10088.64 1892 1876 517.7
C 4 5 647979 1248.11 1892 1876 517.7
C 12 252 531210 1022.54 1892 1876 517.7
D 8 176 4301410 7964.19 1890 1804 539.9
D 6 239 1707881 3160.18 1890 1804 539.9
D 3 12 1386809 2565.45 1890 1804 539.9

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