ASTROSAT CZTI

Data Quality Report

Orbit 59037

Creation date: 2026-08-28T00:00:39.453424
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_004T02_9000006600_59037cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59037cztM0_level2_quad_clean.evt
Size (bytes)790,035,84083,741,760
Size753.4 MB 79.9 MB
Events in quadrant A3,550,991665,532
Events in quadrant B4,645,217670,625
Events in quadrant C4,867,256629,007
Events in quadrant D15,663,702105,658

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150982
B0183562
C0190612
D0510514

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66631362.041123%
B66636199.290110%
C66632844.262344%
D6662562184.374062%

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 7748 6664 40 40 0.52% 0.60%
B 7748 6664 366 366 4.72% 5.49%
C 7748 6664 239 239 3.08% 3.59%
D 7747 6663 5233 5233 67.55% 78.54%

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 14 238 315144 1698.56 762 743 185.1
A 15 233 66340 354.39 762 743 185.1
A 3 14 60286 321.68 762 743 185.1
B 4 236 1216382 7728.53 731 702 157.3
B 0 186 140690 889.96 731 702 157.3
B 2 249 106178 670.55 731 702 157.3
C 15 219 1873444 9267.56 731 726 202.1
C 4 5 46138 224.73 731 726 202.1
C 12 252 45027 219.23 731 726 202.1
D 12 1 14093874 188366.13 255 244 74.8
D 2 62 254439 3397.4 255 244 74.8
D 2 120 88335 1177.37 255 244 74.8

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