ASTROSAT CZTI

Data Quality Report

Orbit 56305

Creation date: 2026-02-24T11:10:20.544726
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_049T01_9000006552_56305cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56305cztM0_level2_quad_clean.evt
Size (bytes)790,784,64078,606,720
Size754.2 MB 75.0 MB
Events in quadrant A15,373,062144,939
Events in quadrant B4,732,052617,479
Events in quadrant C4,470,711587,448
Events in quadrant D4,177,550564,255

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502852
B0186232
C01805910
D0169652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6683538080.502768%
B668386612.958252%
C66805257.859281%
D66842924.368642%

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 7668 6684 5228 5228 68.18% 78.22%
B 7668 6684 254 254 3.31% 3.80%
C 7668 6682 450 450 5.87% 6.73%
D 7669 6685 211 211 2.75% 3.16%

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 15 32 7424818 70994.56 416 406 104.6
A 4 95 2845278 27203.56 416 406 104.6
A 7 64 1376727 13160.81 416 406 104.6
B 5 172 1168896 8312.18 660 637 140.5
B 5 185 434717 3088.49 660 637 140.5
B 1 159 133434 944.85 660 637 140.5
C 15 198 829092 4319.87 694 686 191.8
C 12 94 323071 1681.14 694 686 191.8
C 5 250 148533 770.98 694 686 191.8
D 2 249 309618 1540.05 704 673 200.6
D 13 153 255503 1270.29 704 673 200.6
D 6 239 238129 1183.68 704 673 200.6

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