ASTROSAT CZTI

Data Quality Report

Orbit 54540

Creation date: 2025-10-27T23:51:02.002557
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_127T09_9000006520_54540cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54540cztM0_level2_quad_clean.evt
Size (bytes)924,373,440190,558,080
Size881.6 MB 181.7 MB
Events in quadrant A8,138,5091,248,063
Events in quadrant B7,708,6641,319,669
Events in quadrant C8,690,8861,162,589
Events in quadrant D8,630,2421,103,069

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326752
B0323762
C0352833
D0352452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135454353.211517%
B135465083.750185%
C135456324.665928%
D135455263.883352%

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 15290 13545 156 156 1.02% 1.15%
B 15291 13546 184 184 1.20% 1.36%
C 15290 13545 409 409 2.67% 3.02%
D 15290 13545 309 309 2.02% 2.28%

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 11 3 900425 2445.2 1500 1458 367.6
A 3 14 598668 1624.42 1500 1458 367.6
A 4 249 314346 851.06 1500 1458 367.6
B 1 207 327689 1029.94 1475 1421 316.8
B 10 245 217623 682.49 1475 1421 316.8
B 0 216 212065 664.95 1475 1421 316.8
C 12 252 1526753 3846.6 1451 1436 396.5
C 13 3 465507 1170.31 1451 1436 396.5
C 15 209 296843 744.97 1451 1436 396.5
D 1 3 668579 1622.17 1455 1391 411.3
D 2 172 513030 1243.98 1455 1391 411.3
D 3 12 488415 1184.13 1455 1391 411.3

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