ASTROSAT CZTI

Data Quality Report

Orbit 49679

Creation date: 2024-12-10T13:51:02.888736
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/AS1T05_233T01_9000006438_49679cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49679cztM0_level2_quad_clean.evt
Size (bytes)1,090,768,32051,451,200
Size1.0 GB 49.1 MB
Events in quadrant A14,535,619295,038
Events in quadrant B4,110,279644,518
Events in quadrant C6,100,7385,133
Events in quadrant D15,164,027185,369

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0472690
B0163090
C0223620
D0491940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6001566694.417597%
B60014477.448759%
C60006000100.000000%
D6001583797.267122%

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 7081 6001 5079 5079 71.73% 84.64%
B 7081 6002 222 222 3.14% 3.70%
C 7079 5999 161 161 2.27% 2.68%
D 7080 6000 5405 5405 76.34% 90.08%

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 4807934 42416.69 359 344 113.3
A 7 64 3565353 31453.57 359 344 113.3
A 3 130 1169599 10316.17 359 344 113.3
B 3 232 623359 4464.78 653 633 139.5
B 4 206 264938 1895.0 653 633 139.5
B 5 173 234869 1679.41 653 633 139.5
C 15 190 1066431 59166.76 25 23 18.0
C 15 181 900857 49980.34 25 23 18.0
C 15 180 884354 49064.71 25 23 18.0
D 15 40 3123925 33096.92 243 230 94.4
D 15 184 1975550 20929.38 243 230 94.4
D 12 191 1704062 18052.85 243 230 94.4

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