ASTROSAT CZTI

Data Quality Report

Orbit 59295

Creation date: 2026-09-12T19:37:29.830762
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_021T06_9000006606_59295cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59295cztM0_level2_quad_clean.evt
Size (bytes)694,918,08079,427,520
Size662.7 MB 75.7 MB
Events in quadrant A3,223,864623,521
Events in quadrant B6,511,647527,727
Events in quadrant C3,839,205564,264
Events in quadrant D11,664,487253,683

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138241
B0235981
C0158091
D0389081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6237580.929934%
B6238150024.046169%
C62382413.863418%
D6238363958.336005%

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 7277 6237 14 14 0.19% 0.22%
B 7277 6238 1343 1343 18.46% 21.53%
C 7278 6239 191 191 2.62% 3.06%
D 7277 6237 3439 3439 47.26% 55.14%

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 3 14 343861 2047.63 678 661 167.6
A 7 64 150526 894.14 678 661 167.6
A 15 233 46456 273.23 678 661 167.6
B 4 236 3569434 28583.34 589 569 124.9
B 10 247 182807 1459.56 589 569 124.9
B 5 236 150295 1199.17 589 569 124.9
C 15 147 574294 3243.48 643 637 176.9
C 3 233 293965 1658.49 643 637 176.9
C 7 64 150465 847.13 643 637 176.9
D 12 110 6277537 44238.65 487 465 141.9
D 11 129 2955152 20823.62 487 465 141.9
D 12 2 279006 1963.06 487 465 141.9

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