ASTROSAT CZTI

Data Quality Report

Orbit 21662

Creation date: 2024-06-27T18:30:47.912876
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/AS1A06_002T02_9000003206_21662cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21662cztM0_level2_quad_clean.evt
Size (bytes)1,535,840,640246,340,800
Size1.4 GB 234.9 MB
Events in quadrant A9,026,0231,592,216
Events in quadrant B10,016,3331,614,671
Events in quadrant C9,099,2501,546,199
Events in quadrant D17,089,9171,399,682

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395454
B0419294
C0392514
D0635524

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189853431.806689%
B189855322.802212%
C189854062.138530%
D18985254813.421122%

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 20820 18990 5 5 0.02% 0.03%
B 20820 18990 114 114 0.55% 0.60%
C 20820 18990 4 4 0.02% 0.02%
D 20820 18989 2036 2036 9.78% 10.72%

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 15 236 187400 402.01 2287 2234 460.6
A 3 1 30940 62.32 2287 2234 460.6
A 13 254 27062 53.9 2287 2234 460.6
B 3 64 550656 1269.42 2277 2218 432.0
B 0 197 158082 360.76 2277 2218 432.0
B 0 189 83342 187.77 2277 2218 432.0
C 14 238 342502 660.52 2202 2208 515.2
C 10 22 99811 189.45 2202 2208 515.2
C 9 54 48822 90.48 2202 2208 515.2
D 1 52 5218761 10160.16 2118 2052 513.4
D 1 20 1623800 3158.54 2118 2052 513.4
D 2 136 534217 1036.45 2118 2052 513.4

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