ASTROSAT CZTI

Data Quality Report

Orbit 54680

Creation date: 2025-11-06T08:35:00.304554
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_066T07_9000006522_54680cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54680cztM0_level2_quad_clean.evt
Size (bytes)668,638,080109,244,160
Size637.7 MB 104.2 MB
Events in quadrant A4,190,912757,473
Events in quadrant B3,923,144805,247
Events in quadrant C4,798,977705,276
Events in quadrant D11,223,885489,529

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180691
B0174911
C0198591
D0389031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79121201.516684%
B79131602.021989%
C79132913.677493%
D7913243830.810059%

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 8387 7913 61 61 0.73% 0.77%
B 8388 7914 28 28 0.33% 0.35%
C 8388 7914 244 244 2.91% 3.08%
D 8388 7914 2294 2294 27.35% 28.99%

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 421742 1935.46 874 851 217.5
A 13 248 138323 632.16 874 851 217.5
A 7 14 90659 412.98 874 851 217.5
B 2 249 239600 1276.89 869 839 187.0
B 0 213 127769 678.82 869 839 187.0
B 10 247 70424 372.14 869 839 187.0
C 4 5 483855 2066.84 844 836 233.7
C 13 3 375394 1602.74 844 836 233.7
C 14 254 268715 1146.26 844 836 233.7
D 11 129 5901561 29028.49 714 683 203.3
D 11 176 1439171 7076.43 714 683 203.3
D 2 62 607713 2986.19 714 683 203.3

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