ASTROSAT CZTI

Data Quality Report

Orbit 56506

Creation date: 2026-03-09T05:15:49.610455
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_060T01_9000006556_56506cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56506cztM0_level2_quad_clean.evt
Size (bytes)473,290,56094,383,360
Size451.4 MB 90.0 MB
Events in quadrant A5,259,395601,774
Events in quadrant B4,073,571673,696
Events in quadrant C3,333,106597,485
Events in quadrant D4,364,201544,886

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200022
B0162964
C0144182
D0173412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63053465.487708%
B63042253.569162%
C63041181.871827%
D63042554.045051%

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 7480 6306 303 303 4.05% 4.80%
B 7479 6305 113 113 1.51% 1.79%
C 7479 6305 101 101 1.35% 1.60%
D 7479 6304 242 242 3.24% 3.84%

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 1135211 6646.68 688 670 170.7
A 0 12 761063 4454.74 688 670 170.7
A 4 95 478344 2798.44 688 670 170.7
B 4 206 920240 6199.79 692 668 148.3
B 0 213 118130 791.93 692 668 148.3
B 4 171 61142 407.72 692 668 148.3
C 14 254 314167 1676.25 674 666 187.0
C 13 3 194462 1036.2 674 666 187.0
C 12 252 96855 514.31 674 666 187.0
D 2 249 907753 4811.35 659 629 188.5
D 12 16 488727 2588.85 659 629 188.5
D 3 12 116322 613.63 659 629 188.5

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