ASTROSAT CZTI

Data Quality Report

Orbit 11895

Creation date: 2024-06-27T16:19:51.325744
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/AS1G08_083T04_9000001760_11895cztM0_level2.evt modeM0/AS1G08_083T04_9000001760_11895cztM0_level2_quad_clean.evt
Size (bytes)142,966,08030,646,080
Size136.3 MB 29.2 MB
Events in quadrant A966,057207,096
Events in quadrant B1,312,543202,118
Events in quadrant C800,676206,791
Events in quadrant D1,143,661198,055

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039111
B049991
C033221
D045731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1539785.068226%
B153915510.071475%
C1539543.508772%
D15391016.562703%

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 2535 1541 3 3 0.12% 0.19%
B 2535 1541 58 58 2.29% 3.76%
C 2535 1541 0 0 0.00% 0.00%
D 2535 1541 26 26 1.03% 1.69%

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 7 144 54332 1214.34 211 206 44.6
A 1 162 36908 823.42 211 206 44.6
A 1 178 20772 461.41 211 206 44.6
B 3 64 247378 6038.06 204 199 40.9
B 4 239 202093 4931.85 204 199 40.9
B 15 204 45120 1097.33 204 199 40.9
C 13 61 1457 25.35 205 205 49.4
C 3 202 533 6.64 205 205 49.4
C 3 203 467 5.31 205 205 49.4
D 8 195 147297 2693.5 205 200 54.6
D 12 233 74885 1367.56 205 200 54.6
D 7 71 35104 639.13 205 200 54.6

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