ASTROSAT CZTI

Data Quality Report

Orbit 04799

Creation date: 2024-06-27T14:47:19.115639
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/AS1G05_245T01_9000000606_04799cztM0_level2.evt modeM0/AS1G05_245T01_9000000606_04799cztM0_level2_quad_clean.evt
Size (bytes)766,929,600128,329,920
Size731.4 MB 122.4 MB
Events in quadrant A5,191,833804,438
Events in quadrant B5,991,691799,501
Events in quadrant C5,088,046796,160
Events in quadrant D6,225,608740,809

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223385
B0245724
C0224648
D0258335

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107691931.792181%
B107692642.451481%
C107671161.077366%
D107684654.318351%

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 12140 10772 33 33 0.27% 0.31%
B 12140 10771 95 95 0.78% 0.88%
C 12140 10772 7 7 0.06% 0.06%
D 12140 10772 220 220 1.81% 2.04%

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 13 251 103893 389.05 1289 1261 263.8
A 14 238 64314 239.02 1289 1261 263.8
A 0 50 22443 80.3 1289 1261 263.8
B 15 204 339276 1365.84 1298 1271 247.5
B 10 16 299118 1203.57 1298 1271 247.5
B 14 167 201625 809.61 1298 1271 247.5
C 12 4 177328 605.14 1256 1265 290.9
C 1 16 12570 38.86 1256 1265 290.9
C 13 61 10207 30.73 1256 1265 290.9
D 13 235 719178 2444.92 1224 1190 293.7
D 2 136 277553 941.08 1224 1190 293.7
D 13 239 220157 745.63 1224 1190 293.7

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