ASTROSAT CZTI

Data Quality Report

Orbit 57053

Creation date: 2026-04-15T01:36:21.965210
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_57053cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57053cztM0_level2_quad_clean.evt
Size (bytes)1,142,055,360268,096,320
Size1.1 GB 255.7 MB
Events in quadrant A9,313,9631,757,162
Events in quadrant B9,229,0771,866,767
Events in quadrant C11,144,0521,615,913
Events in quadrant D11,123,9521,574,916

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0414364
B0411043
C0461833
D0460933

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188952711.434242%
B188964812.545512%
C188967493.963802%
D188964042.138019%

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 20025 18898 97 97 0.48% 0.51%
B 20026 18899 193 193 0.96% 1.02%
C 20026 18899 429 429 2.14% 2.27%
D 20026 18899 331 331 1.65% 1.75%

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 14 623197 1240.57 2031 1975 500.8
A 10 251 245930 487.17 2031 1975 500.8
A 4 249 163014 321.59 2031 1975 500.8
B 10 16 493538 1161.52 1985 1907 423.3
B 0 63 251857 590.53 1985 1907 423.3
B 0 213 204559 478.78 1985 1907 423.3
C 9 38 2299583 4349.86 1955 1941 528.2
C 12 254 211319 396.39 1955 1941 528.2
C 6 223 206350 386.98 1955 1941 528.2
D 15 142 911694 1654.78 1951 1864 549.8
D 2 249 671826 1218.51 1951 1864 549.8
D 2 172 330945 598.53 1951 1864 549.8

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