ASTROSAT CZTI

Data Quality Report

Orbit 38745

Creation date: 2024-06-27T21:55:53.698080
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/AS1A12_054T01_9000005392_38745cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38745cztM0_level2_quad_clean.evt
Size (bytes)775,039,680175,026,240
Size739.1 MB 166.9 MB
Events in quadrant A5,588,1481,203,501
Events in quadrant B5,186,0501,218,725
Events in quadrant C5,521,7411,144,762
Events in quadrant D11,559,037985,871

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231424
B0226223
C0230543
D0419073

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10779270.250487%
B10779290.269042%
C10779850.788570%
D10779114610.631784%

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 13616 10781 8 8 0.06% 0.07%
B 13616 10781 10 10 0.07% 0.09%
C 13616 10781 69 69 0.51% 0.64%
D 13616 10781 950 950 6.98% 8.81%

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 733195 2969.86 1219 1196 246.5
A 9 143 34235 134.05 1219 1196 246.5
A 12 189 32658 127.65 1219 1196 246.5
B 5 184 187434 795.12 1205 1172 234.3
B 5 200 98686 416.27 1205 1172 234.3
B 4 171 52602 219.55 1205 1172 234.3
C 15 214 471176 1709.39 1181 1188 274.9
C 0 10 209394 757.27 1181 1188 274.9
C 15 208 155160 560.01 1181 1188 274.9
D 2 16 3125143 11089.34 1141 1106 281.7
D 12 235 2761070 9796.99 1141 1106 281.7
D 12 227 442080 1565.32 1141 1106 281.7

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