ASTROSAT CZTI

Data Quality Report

Orbit 20160301_T01_029T01_9000000352_level2

Creation date: 2025-10-27T23:25:21.510925
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/AS1T01_029T01_9000000352cztM0_level2.fits modeM0/AS1T01_029T01_9000000352cztM0_level2_quad_clean.evt
Size (bytes)374,653,440367,081,920
Size357.3 MB 350.1 MB
Events in quadrant A2,287,6082,287,265
Events in quadrant B2,114,0842,130,129
Events in quadrant C2,221,7862,144,584
Events in quadrant D1,669,9701,508,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0904820
B01507440
C0969030
D02238950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08980
B08980
C08980
D08980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A443602020.455365%
B4436043119.718215%
C443604451.003156%
D443601195426.947701%

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 47864 44354 0 0 0.00% 0.00%
B 47864 44356 0 0 0.00% 0.00%
C 47864 44352 0 0 0.00% 0.00%
D 47864 44347 0 0 0.00% 0.00%

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 14 188 2190 10.47 592 551 156.6
A 0 29 2037 9.49 592 551 156.6
A 7 110 2004 9.28 592 551 156.6
B 2 9 1857 11.97 555 527 111.1
B 12 226 1589 9.56 555 527 111.1
B 14 254 1571 9.4 555 527 111.1
C 2 191 1541 6.31 587 540 158.7
C 1 80 1528 6.23 587 540 158.7
C 9 242 1458 5.78 587 540 158.7
D 11 82 1295 6.37 475 429 135.9
D 6 231 1262 6.13 475 429 135.9
D 7 3 1256 6.08 475 429 135.9

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