ASTROSAT CZTI

Data Quality Report

Orbit 59044

Creation date: 2026-08-28T01:24:08.815095
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_59044cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59044cztM0_level2_quad_clean.evt
Size (bytes)2,039,109,120156,827,520
Size1.9 GB 149.6 MB
Events in quadrant A8,616,8231,345,686
Events in quadrant B10,320,4321,379,297
Events in quadrant C21,295,761892,348
Events in quadrant D34,141,120138,645

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353902
B0404492
C0732594
D01111402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143536254.354490%
B1435311067.705706%
C14352499434.796544%
D143521295490.259197%

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 14858 14356 304 304 2.05% 2.12%
B 14858 14356 480 480 3.23% 3.34%
C 14857 14355 3878 3878 26.10% 27.01%
D 14856 14352 11862 11862 79.85% 82.65%

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 956649 2429.05 1590 1549 393.2
A 15 233 337790 855.14 1590 1549 393.2
A 8 27 309842 784.06 1590 1549 393.2
B 2 249 2016291 6234.83 1538 1480 323.2
B 5 236 575494 1776.28 1538 1480 323.2
B 4 236 390392 1203.49 1538 1480 323.2
C 15 219 13276717 35898.53 1339 1328 369.8
C 15 198 1402070 3787.81 1339 1328 369.8
C 12 252 431486 1163.21 1339 1328 369.8
D 12 1 30853593 246123.05 432 410 125.4
D 12 110 561553 4476.37 432 410 125.4
D 2 62 421663 3360.43 432 410 125.4

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