ASTROSAT CZTI

Data Quality Report

Orbit 58906

Creation date: 2026-08-17T16:16:13.661997
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_004T07_9000006598_58906cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58906cztM0_level2_quad_clean.evt
Size (bytes)794,439,36083,367,360
Size757.6 MB 79.5 MB
Events in quadrant A7,772,991552,261
Events in quadrant B3,625,388711,590
Events in quadrant C3,654,407636,849
Events in quadrant D13,851,116170,195

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275882
B0149762
C0153062
D0456587

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6490144722.295840%
B64902323.574730%
C64901632.511556%
D6489497276.621976%

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 7660 6491 1010 1010 13.19% 15.56%
B 7660 6491 68 68 0.89% 1.05%
C 7660 6491 90 90 1.17% 1.39%
D 7659 6490 4495 4495 58.69% 69.26%

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 4463729 26211.41 702 686 170.3
A 15 233 345381 2024.39 702 686 170.3
A 3 245 118571 692.34 702 686 170.3
B 4 201 137738 854.5 747 718 160.4
B 4 171 124494 771.91 747 718 160.4
B 5 185 79301 490.07 747 718 160.4
C 12 252 355376 1785.81 730 725 198.6
C 12 249 154485 774.24 730 725 198.6
C 14 254 109819 549.33 730 725 198.6
D 12 110 11404255 82821.66 484 463 137.7
D 11 129 249080 1805.62 484 463 137.7
D 2 249 125059 904.9 484 463 137.7

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