ASTROSAT CZTI

Data Quality Report

Orbit 31984

Creation date: 2024-06-27T20:34:50.294261
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/AS1A10_058T12_9000004674_31984cztM0_level2.evt modeM0/AS1A10_058T12_9000004674_31984cztM0_level2_quad_clean.evt
Size (bytes)1,569,873,600237,003,840
Size1.5 GB 226.0 MB
Events in quadrant A8,691,0881,526,036
Events in quadrant B14,214,5371,514,799
Events in quadrant C10,834,9811,462,622
Events in quadrant D12,563,1641,406,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378954
B0563034
C0439384
D0498854

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18393740.402327%
B183943421.859302%
C183949775.311515%
D1839410135.507231%

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 20428 18394 0 0 0.00% 0.00%
B 20429 18394 41 41 0.20% 0.22%
C 20429 18394 457 457 2.24% 2.48%
D 20429 18394 837 837 4.10% 4.55%

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 13 254 35273 73.49 2247 2196 450.1
A 3 137 23341 46.98 2247 2196 450.1
A 0 226 18743 36.76 2247 2196 450.1
B 6 159 4875791 11393.31 2219 2164 427.8
B 10 245 181224 418.6 2219 2164 427.8
B 0 198 122981 282.44 2219 2164 427.8
C 0 10 1204641 2422.24 2111 2123 496.4
C 3 233 687436 1380.43 2111 2123 496.4
C 14 238 417873 837.45 2111 2123 496.4
D 2 250 1912089 3735.68 2125 2066 511.3
D 8 195 1010317 1971.97 2125 2066 511.3
D 13 249 601299 1172.0 2125 2066 511.3

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