ASTROSAT CZTI

Data Quality Report

Orbit 57082

Creation date: 2026-04-17T01:13:52.393178
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_083T10_9000006566_57082cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57082cztM0_level2_quad_clean.evt
Size (bytes)1,641,781,440255,945,600
Size1.5 GB 244.1 MB
Events in quadrant A8,795,4701,764,633
Events in quadrant B10,220,9421,846,833
Events in quadrant C12,974,2371,668,681
Events in quadrant D27,316,1851,160,046

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0405904
B0438283
C0521213
D0944553

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189872591.364091%
B189886563.454814%
C189883761.980198%
D18988542728.581209%

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 20152 18990 123 123 0.61% 0.65%
B 20153 18991 311 311 1.54% 1.64%
C 20153 18991 239 239 1.19% 1.26%
D 20153 18991 5687 5687 28.22% 29.95%

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 4 13 629339 1247.95 2042 1985 502.7
A 13 248 143607 281.72 2042 1985 502.7
A 4 3 41242 78.09 2042 1985 502.7
B 10 16 1287926 3022.13 1978 1902 425.5
B 4 171 346324 809.39 1978 1902 425.5
B 10 32 246179 574.05 1978 1902 425.5
C 1 16 2959321 5526.6 1969 1953 535.1
C 14 245 1058267 1973.99 1969 1953 535.1
C 6 223 531769 990.1 1969 1953 535.1
D 15 142 9942487 19865.36 1774 1696 500.4
D 12 33 8497622 16977.99 1774 1696 500.4
D 2 249 669310 1334.14 1774 1696 500.4

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