ASTROSAT CZTI

Data Quality Report

Orbit 59109

Creation date: 2026-08-31T08:13:09.594845
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_59109cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59109cztM0_level2_quad_clean.evt
Size (bytes)686,396,16083,810,880
Size654.6 MB 79.9 MB
Events in quadrant A3,108,587647,622
Events in quadrant B3,686,890690,010
Events in quadrant C4,396,115608,122
Events in quadrant D13,710,733138,315

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140341
B0155502
C0174891
D0451701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65041141.752768%
B65032193.367676%
C65032884.428725%
D6504492075.645756%

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 7699 6505 57 57 0.74% 0.88%
B 7698 6504 99 99 1.29% 1.52%
C 7698 6504 157 157 2.04% 2.41%
D 7698 6503 4576 4576 59.44% 70.37%

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 10 251 152784 861.75 714 697 176.5
A 7 206 73249 411.09 714 697 176.5
A 4 249 37167 206.64 714 697 176.5
B 4 236 494837 3302.68 708 682 149.6
B 5 185 101791 675.76 708 682 149.6
B 5 236 93671 621.49 708 682 149.6
C 3 233 706956 3692.35 689 682 191.3
C 13 3 603829 3153.21 689 682 191.3
C 15 201 146075 760.1 689 682 191.3
D 12 1 12413291 192973.54 218 207 64.3
D 6 239 184615 2866.8 218 207 64.3
D 1 27 112580 1746.95 218 207 64.3

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