ASTROSAT CZTI

Data Quality Report

Orbit 47865

Creation date: 2024-08-04T07:53:32.811611
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/AS1A09_038T20_9000006366_47865cztM0_level2.fits modeM0/AS1A09_038T20_9000006366_47865cztM0_level2_quad_clean.evt
Size (bytes)932,094,720187,741,440
Size888.9 MB 179.0 MB
Events in quadrant A12,027,2771,255,342
Events in quadrant B5,370,8731,326,485
Events in quadrant C5,079,7621,283,993
Events in quadrant D11,115,9371,004,723

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0434253
B0245193
C0239733
D0413583

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117633763.196463%
B11763710.603588%
C11763240.204030%
D11763171114.545609%

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 14068 11765 182 182 1.29% 1.55%
B 14068 11765 29 29 0.21% 0.25%
C 14068 11765 7 7 0.05% 0.06%
D 14068 11765 1422 1422 10.11% 12.09%

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 10 83 6814773 26448.43 1258 1236 257.6
A 14 248 263571 1018.32 1258 1236 257.6
A 0 31 58827 223.55 1258 1236 257.6
B 5 255 106437 425.3 1278 1236 247.4
B 7 219 91841 366.29 1278 1236 247.4
B 4 21 62757 248.71 1278 1236 247.4
C 12 2 81347 272.05 1271 1278 294.3
C 14 254 16960 53.28 1271 1278 294.3
C 9 237 16459 51.58 1271 1278 294.3
D 2 165 4378872 14952.17 1168 1129 292.8
D 2 37 1098645 3748.56 1168 1129 292.8
D 2 249 546993 1864.4 1168 1129 292.8

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