ASTROSAT CZTI

Data Quality Report

Orbit 58428

Creation date: 2026-07-16T12:34:22.573131
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_045T01_9000006590_58428cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58428cztM0_level2_quad_clean.evt
Size (bytes)470,016,000106,266,240
Size448.2 MB 101.3 MB
Events in quadrant A3,686,908690,264
Events in quadrant B4,435,297730,376
Events in quadrant C4,231,706665,500
Events in quadrant D4,474,083621,285

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162502
B0180152
C0178092
D0184902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73352743.735515%
B73344686.381238%
C73343354.567767%
D73343464.717753%

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 9010 7338 13 13 0.14% 0.18%
B 9009 7337 123 123 1.37% 1.68%
C 9009 7337 137 137 1.52% 1.87%
D 9009 7337 151 151 1.68% 2.06%

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 12 114 171898 813.39 856 832 210.3
A 7 64 58664 274.98 856 832 210.3
A 2 143 53125 248.64 856 832 210.3
B 10 247 359865 1983.7 837 805 181.0
B 5 172 253631 1396.79 837 805 181.0
B 6 255 165078 907.56 837 805 181.0
C 5 10 441547 1947.27 827 821 226.3
C 12 252 287685 1267.46 827 821 226.3
C 4 5 87665 383.71 827 821 226.3
D 8 240 850853 3635.75 826 789 233.8
D 12 248 130836 556.21 826 789 233.8
D 2 252 88736 376.15 826 789 233.8

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