ASTROSAT CZTI

Data Quality Report

Orbit 57068

Creation date: 2026-04-16T02:03:27.899564
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_083T10_9000006566_57068cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57068cztM0_level2_quad_clean.evt
Size (bytes)1,195,701,120255,723,840
Size1.1 GB 243.9 MB
Events in quadrant A8,092,0201,687,075
Events in quadrant B9,355,3401,785,398
Events in quadrant C10,450,6511,604,625
Events in quadrant D14,947,3301,405,106

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380343
B0410103
C0434273
D0571235

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182852171.186765%
B182855482.996992%
C182852721.487558%
D1828513527.394039%

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 19770 18285 56 56 0.28% 0.31%
B 19770 18285 219 219 1.11% 1.20%
C 19770 18288 189 189 0.96% 1.03%
D 19770 18287 1340 1340 6.78% 7.33%

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 7 64 119015 242.36 1963 1911 483.2
A 10 251 98995 200.93 1963 1911 483.2
A 13 248 85576 173.15 1963 1911 483.2
B 10 16 657606 1596.4 1908 1835 410.8
B 4 171 285500 690.55 1908 1835 410.8
B 0 213 186650 449.91 1908 1835 410.8
C 1 16 659471 1291.57 1892 1877 509.1
C 6 223 298177 581.96 1892 1877 509.1
C 14 67 289331 564.58 1892 1877 509.1
D 15 142 3600271 6956.39 1840 1754 517.3
D 12 33 2805813 5420.61 1840 1754 517.3
D 2 249 358463 689.56 1840 1754 517.3

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