ASTROSAT CZTI

Data Quality Report

Orbit 14135

Creation date: 2024-06-27T16:50:48.195513
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_218T04_9000002086_14135cztM0_level2.evt modeM0/AS1A04_218T04_9000002086_14135cztM0_level2_quad_clean.evt
Size (bytes)1,547,461,440247,432,320
Size1.4 GB 236.0 MB
Events in quadrant A9,041,3161,572,061
Events in quadrant B9,635,7021,571,202
Events in quadrant C9,576,0041,622,115
Events in quadrant D17,308,0741,397,117

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400485
B0416184
C0406964
D0646274

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193182221.149187%
B193182911.506367%
C193181800.931773%
D19318233612.092349%

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 21249 19323 2 2 0.01% 0.01%
B 21249 19323 7 7 0.03% 0.04%
C 21249 19323 8 8 0.04% 0.04%
D 21249 19322 1930 1930 9.08% 9.99%

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 12 189 38909 78.59 2316 2268 466.2
A 1 113 38296 77.27 2316 2268 466.2
A 8 15 31822 63.39 2316 2268 466.2
B 10 244 264316 589.08 2311 2247 444.9
B 3 209 84512 184.91 2311 2247 444.9
B 0 189 68046 147.9 2311 2247 444.9
C 3 233 710804 1339.54 2264 2275 528.9
C 14 234 40742 72.72 2264 2275 528.9
C 13 61 16387 26.68 2264 2275 528.9
D 7 80 6410562 12726.47 2108 2057 503.6
D 8 195 1209074 2396.98 2108 2057 503.6
D 1 52 528475 1045.4 2108 2057 503.6

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