ASTROSAT CZTI

Data Quality Report

Orbit 53531

Creation date: 2025-08-21T19:09:09.357034
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_004T05_9000006502_53531cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53531cztM0_level2_quad_clean.evt
Size (bytes)1,290,430,080179,101,440
Size1.2 GB 170.8 MB
Events in quadrant A9,074,3331,262,284
Events in quadrant B7,366,3291,350,317
Events in quadrant C18,357,360845,885
Events in quadrant D11,976,9161,076,371

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358143
B03079910
C0633843
D0442943

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128526815.298786%
B128504633.603113%
C12852437934.072518%
D12852146911.430128%

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 34577 12854 368 368 1.06% 2.86%
B 34576 12852 168 168 0.49% 1.31%
C 34575 12853 3953 3953 11.43% 30.76%
D 34576 12854 1219 1219 3.53% 9.48%

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 62 1138107 3241.83 1424 1387 350.6
A 15 174 968294 2757.54 1424 1387 350.6
A 3 63 470548 1338.01 1424 1387 350.6
B 2 249 454763 1511.35 1413 1367 300.0
B 10 28 402952 1338.64 1413 1367 300.0
B 4 81 182824 604.87 1413 1367 300.0
C 15 224 4784263 14969.73 1154 1142 319.5
C 1 241 2936580 9187.04 1154 1142 319.5
C 7 64 2815142 8806.98 1154 1142 319.5
D 6 239 2371805 6166.23 1356 1299 384.4
D 3 12 1941437 5046.75 1356 1299 384.4
D 7 70 553254 1435.76 1356 1299 384.4

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