ASTROSAT CZTI

Data Quality Report

Orbit 01092

Creation date: 2024-06-27T14:07:22.311082
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/AS1P01_997T02_9000000212_01092cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01092cztM0_level2_quad_clean.evt
Size (bytes)1,169,749,440109,673,280
Size1.1 GB 104.6 MB
Events in quadrant A8,547,899713,424
Events in quadrant B8,966,207712,795
Events in quadrant C8,959,072693,189
Events in quadrant D8,463,788688,612

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306683
B0319082
C0318482
D0303832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A737740.054223%
B737790.122001%
C7377120.162668%
D737780.108445%

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 7902 7379 182 182 2.30% 2.47%
B 7902 7379 223 223 2.82% 3.02%
C 7902 7379 233 233 2.95% 3.16%
D 7902 7379 134 134 1.70% 1.82%

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 15 233 14175 22.36 2217 2231 534.2
A 11 79 11595 17.53 2217 2231 534.2
A 4 32 10721 15.89 2217 2231 534.2
B 15 22 22004 36.02 2325 2337 546.1
B 5 184 21840 35.72 2325 2337 546.1
B 5 249 17815 28.34 2325 2337 546.1
C 15 241 384034 637.76 2149 2221 598.7
C 10 207 115740 189.62 2149 2221 598.7
C 3 111 31554 49.0 2149 2221 598.7
D 2 216 651854 1007.51 2068 2142 644.9
D 10 125 52737 78.46 2068 2142 644.9
D 2 107 16157 21.73 2068 2142 644.9

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