ASTROSAT CZTI

Data Quality Report

Orbit 08992

Creation date: 2024-06-27T15:39:47.202525
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/AS1A03_025T08_9000001248_08992cztM0_level2.evt modeM0/AS1A03_025T08_9000001248_08992cztM0_level2_quad_clean.evt
Size (bytes)189,817,92037,054,080
Size181.0 MB 35.3 MB
Events in quadrant A1,465,500236,979
Events in quadrant B1,403,784231,256
Events in quadrant C1,311,068226,149
Events in quadrant D1,368,794221,143

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126
B0127
C0115
D0126

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02776221556
B02622320162
C02772021818
D02759721602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252192
B0253195
C0254194
D0252190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2871642.229188%
B2874642.226862%
C2868351.220363%
D2820381.347518%

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 13438 4161 6 6 0.04% 0.14%
B 13305 4232 1 1 0.01% 0.02%
C 13401 4189 0 0 0.00% 0.00%
D 13371 4154 3 3 0.02% 0.07%

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 5 131315 1826.95 341 333 71.7
A 15 174 13996 190.57 341 333 71.7
A 3 1 5663 74.34 341 333 71.7
B 4 173 15263 220.23 345 336 67.8
B 0 198 12407 178.09 345 336 67.8
B 10 16 11690 167.52 345 336 67.8
C 4 254 11311 138.47 333 335 79.3
C 13 61 2455 26.74 333 335 79.3
C 14 67 1515 14.89 333 335 79.3
D 1 52 69230 821.46 326 317 83.9
D 6 225 28976 341.62 326 317 83.9
D 7 71 13784 160.53 326 317 83.9

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