ASTROSAT CZTI

Data Quality Report

Orbit 57812

Creation date: 2026-06-05T01:26:03.227481
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_083T16_9000006580_57812cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57812cztM0_level2_quad_clean.evt
Size (bytes)693,815,04074,373,120
Size661.7 MB 70.9 MB
Events in quadrant A3,415,413584,512
Events in quadrant B3,054,958624,098
Events in quadrant C10,722,468274,855
Events in quadrant D8,013,094339,819

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01262
B01262
C01251
D01262

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01415898
B01375764
C03618069
D028466294

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61381211.971326%
B61431121.823213%
C6140338655.146580%
D6127224236.592133%

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 7114 6140 56 56 0.79% 0.91%
B 7120 6146 35 35 0.49% 0.57%
C 7118 6144 2993 2993 42.05% 48.71%
D 7113 6135 2020 2020 28.40% 32.93%

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 471881 2959.25 642 627 159.2
A 10 251 274072 1717.1 642 627 159.2
A 3 128 134393 839.98 642 627 159.2
B 10 16 167759 1229.11 639 616 136.0
B 0 245 64743 471.57 639 616 136.0
B 7 252 61425 447.17 639 616 136.0
C 9 38 7829554 58638.41 487 482 133.5
C 15 224 742117 5554.72 487 482 133.5
C 12 2 126431 943.34 487 482 133.5
D 2 249 4395039 31972.9 476 453 137.4
D 8 240 1265278 9202.26 476 453 137.4
D 3 12 150088 1088.67 476 453 137.4

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