ASTROSAT CZTI

Data Quality Report

Orbit 59209

Creation date: 2026-09-07T11:56:24.032198
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/AS1T05_271T01_9000006604_59209cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59209cztM0_level2_quad_clean.evt
Size (bytes)468,558,720100,186,560
Size446.9 MB 95.5 MB
Events in quadrant A3,410,883668,615
Events in quadrant B3,340,181713,434
Events in quadrant C3,896,156639,215
Events in quadrant D6,199,116564,797

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015032537
B014739484
C016610636
D023396493

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01362
C01362
D01364

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64041201.873829%
B64131832.853579%
C64041261.967520%
D64235829.061186%

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 9135 6472 30 30 0.33% 0.46%
B 9136 6479 80 80 0.88% 1.23%
C 9135 6477 39 39 0.43% 0.60%
D 9135 6497 492 492 5.39% 7.57%

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 0 24 279931 1535.15 745 725 181.9
A 3 14 119081 650.75 745 725 181.9
A 10 251 105709 577.23 745 725 181.9
B 4 236 172045 1097.7 735 707 156.1
B 4 201 112767 717.93 735 707 156.1
B 10 247 63013 399.17 735 707 156.1
C 3 233 705525 3533.33 734 728 199.5
C 15 147 87993 437.48 734 728 199.5
C 3 242 72424 359.43 734 728 199.5
D 12 110 1648623 8270.4 711 677 199.3
D 11 129 672759 3372.92 711 677 199.3
D 3 12 614207 3079.07 711 677 199.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct