ASTROSAT CZTI

Data Quality Report

Orbit 12553

Creation date: 2024-06-27T16:29:07.844539
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_201T03_9000001862_12553cztM0_level2.evt modeM0/AS1A04_201T03_9000001862_12553cztM0_level2_quad_clean.evt
Size (bytes)560,926,080108,567,360
Size534.9 MB 103.5 MB
Events in quadrant A3,870,500676,462
Events in quadrant B4,214,708698,062
Events in quadrant C3,835,037689,972
Events in quadrant D4,508,943651,683

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171252
B0178841
C0171151
D0191341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82143344.066228%
B82143644.431458%
C82141892.300950%
D82143624.407110%

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 8800 8216 0 0 0.00% 0.00%
B 8800 8216 20 20 0.23% 0.24%
C 8800 8216 1 1 0.01% 0.01%
D 8800 8216 94 94 1.07% 1.14%

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 8 15 19653 91.27 993 970 204.7
A 1 162 12027 54.02 993 970 204.7
A 12 189 9301 40.7 993 970 204.7
B 3 64 82167 423.66 992 965 191.7
B 0 214 68476 352.23 992 965 191.7
B 4 239 66085 339.75 992 965 191.7
C 3 233 45066 196.22 967 966 224.8
C 15 208 16174 67.67 967 966 224.8
C 13 61 7048 27.06 967 966 224.8
D 1 52 596365 2554.0 957 925 233.1
D 13 249 108613 461.9 957 925 233.1
D 8 195 55270 233.1 957 925 233.1

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