ASTROSAT CZTI

Data Quality Report

Orbit 59313

Creation date: 2026-09-14T01:11:27.126995
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_021T06_9000006606_59313cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59313cztM0_level2_quad_clean.evt
Size (bytes)580,576,32083,701,440
Size553.7 MB 79.8 MB
Events in quadrant A2,785,109611,040
Events in quadrant B4,343,055603,617
Events in quadrant C3,853,656580,634
Events in quadrant D10,042,027318,765

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127761
B0172162
C0155921
D0340261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6011420.698719%
B601168411.379138%
C6011881.463983%
D6011270144.934287%

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 7161 6011 7 7 0.10% 0.12%
B 7161 6012 546 546 7.62% 9.08%
C 7161 6011 40 40 0.56% 0.67%
D 7160 6010 2734 2734 38.18% 45.49%

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 10 0 134347 832.08 649 635 160.7
A 15 233 56152 345.48 649 635 160.7
A 13 248 15644 93.4 649 635 160.7
B 4 236 1743696 13284.02 620 596 131.2
B 10 247 34721 260.06 620 596 131.2
B 0 157 30029 224.31 620 596 131.2
C 9 38 808271 4580.51 639 629 176.3
C 15 198 211871 1198.05 639 629 176.3
C 4 5 145052 819.09 639 629 176.3
D 12 110 7227998 49717.35 505 480 145.4
D 11 129 719869 4948.6 505 480 145.4
D 12 2 38752 263.27 505 480 145.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct