ASTROSAT CZTI

Data Quality Report

Orbit 24736

Creation date: 2024-06-27T19:09:18.019866
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/AS1T03_194T01_9000003620_24736cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24736cztM0_level2_quad_clean.evt
Size (bytes)601,151,04067,150,080
Size573.3 MB 64.0 MB
Events in quadrant A3,573,063410,312
Events in quadrant B3,672,778414,105
Events in quadrant C6,549,507375,168
Events in quadrant D3,972,719381,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144752
B0148222
C0240932
D0157862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6479701.080414%
B64791111.713227%
C64792724.198179%
D6479791.219324%

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 7749 6479 0 0 0.00% 0.00%
B 7749 6479 11 11 0.14% 0.17%
C 7749 6479 0 0 0.00% 0.00%
D 7749 6479 27 27 0.35% 0.42%

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 10 255 11304 57.33 924 909 181.3
A 13 254 8968 44.45 924 909 181.3
A 0 226 8067 39.48 924 909 181.3
B 3 64 59969 346.43 910 890 170.5
B 6 36 46375 266.72 910 890 170.5
B 12 111 20309 113.87 910 890 170.5
C 7 247 3049684 15637.0 851 857 195.0
C 14 238 139089 708.97 851 857 195.0
C 2 16 25705 127.44 851 857 195.0
D 1 52 560689 2649.01 876 855 211.3
D 8 195 68178 318.56 876 855 211.3
D 7 238 28734 131.92 876 855 211.3

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