ASTROSAT CZTI

Data Quality Report

Orbit 56320

Creation date: 2026-02-24T17:29:09.216824
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_56320cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56320cztM0_level2_quad_clean.evt
Size (bytes)746,602,56087,240,960
Size712.0 MB 83.2 MB
Events in quadrant A11,142,333396,394
Events in quadrant B7,531,235572,572
Events in quadrant C3,431,826634,838
Events in quadrant D4,995,106555,397

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377862
B0271692
C0152472
D0196302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6915310744.931309%
B6915164723.817787%
C69151632.357195%
D69156208.966016%

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 7755 6916 2778 2778 35.82% 40.17%
B 7755 6916 1111 1111 14.33% 16.06%
C 7755 6916 26 26 0.34% 0.38%
D 7755 6916 310 310 4.00% 4.48%

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 11 31 5394209 33509.15 646 629 161.0
A 4 95 1592650 9890.88 646 629 161.0
A 4 249 713162 4426.81 646 629 161.0
B 5 172 2720689 18703.09 684 659 145.4
B 5 185 1058518 7273.9 684 659 145.4
B 1 255 606236 4163.98 684 659 145.4
C 12 252 356465 1749.4 744 736 203.3
C 6 223 38990 188.13 744 736 203.3
C 15 209 27116 129.73 744 736 203.3
D 2 62 562410 2799.62 708 677 200.6
D 2 249 445662 2217.76 708 677 200.6
D 6 239 393224 1956.41 708 677 200.6

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