ASTROSAT CZTI

Data Quality Report

Orbit 27804

Creation date: 2024-06-27T19:44:37.723273
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/AS1A10_016T02_9000004018_27804cztM0_level2.evt modeM0/AS1A10_016T02_9000004018_27804cztM0_level2_quad_clean.evt
Size (bytes)103,420,80017,228,160
Size98.6 MB 16.4 MB
Events in quadrant A772,289108,736
Events in quadrant B775,800111,812
Events in quadrant C760,348104,096
Events in quadrant D736,205102,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032120
B032090
C031480
D029670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124790.721732%
B1247161.283079%
C1247231.844427%
D1246141.123596%

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 1247 1247 0 0 0.00% 0.00%
B 1247 1247 0 0 0.00% 0.00%
C 1247 1247 0 0 0.00% 0.00%
D 1246 1246 7 7 0.56% 0.56%

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 13 254 1956 42.78 200 197 41.1
A 0 226 1670 35.82 200 197 41.1
A 3 137 1669 35.8 200 197 41.1
B 12 111 4310 106.54 197 193 38.6
B 11 111 3975 97.87 197 193 38.6
B 14 111 3867 95.07 197 193 38.6
C 14 238 30609 680.44 186 187 44.7
C 3 233 1902 38.36 186 187 44.7
C 4 175 1607 31.76 186 187 44.7
D 1 52 22298 474.24 188 182 46.6
D 2 234 3747 76.44 188 182 46.6
D 2 250 2441 48.44 188 182 46.6

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