ASTROSAT CZTI

Data Quality Report

Orbit 14675

Creation date: 2024-06-27T16:58:20.001511
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/AS1A04_101T01_9000002170_14675cztM0_level2.evt modeM0/AS1A04_101T01_9000002170_14675cztM0_level2_quad_clean.evt
Size (bytes)508,222,080109,851,840
Size484.7 MB 104.8 MB
Events in quadrant A3,752,142733,521
Events in quadrant B3,473,625723,865
Events in quadrant C4,225,084712,264
Events in quadrant D3,502,718706,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152913
B0144992
C0174892
D0145182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6458921.424590%
B6458831.285228%
C6458821.269743%
D6458771.192320%

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 7684 6459 1 1 0.01% 0.02%
B 7684 6459 1 1 0.01% 0.02%
C 7684 6459 0 0 0.00% 0.00%
D 7684 6459 8 8 0.10% 0.12%

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 0 253 161020 898.04 888 873 178.3
A 8 15 115200 641.1 888 873 178.3
A 12 189 57448 317.25 888 873 178.3
B 0 214 26868 160.15 864 847 162.5
B 0 205 25802 153.59 864 847 162.5
B 0 230 23951 142.19 864 847 162.5
C 3 233 912614 4672.42 847 855 195.1
C 3 234 6334 28.08 847 855 195.1
C 13 61 6049 26.62 847 855 195.1
D 2 152 70365 324.64 857 836 214.2
D 12 2 62167 286.36 857 836 214.2
D 1 255 53872 247.63 857 836 214.2

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