ASTROSAT CZTI

Data Quality Report

Orbit 14062

Creation date: 2024-06-27T16:49:50.407676
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_162T01_9000002074_14062cztM0_level2.evt modeM0/AS1A04_162T01_9000002074_14062cztM0_level2_quad_clean.evt
Size (bytes)1,040,158,080199,068,480
Size992.0 MB 189.8 MB
Events in quadrant A5,278,7391,393,101
Events in quadrant B5,922,7171,406,190
Events in quadrant C5,224,2821,365,318
Events in quadrant D14,303,2781,073,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234752
B0250262
C0232292
D0499752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114191000.875733%
B114191741.523776%
C11419850.744373%
D11419383433.575620%

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 12255 11422 2 2 0.02% 0.02%
B 12255 11422 27 27 0.22% 0.24%
C 12255 11422 1 1 0.01% 0.01%
D 12255 11421 3165 3165 25.83% 27.71%

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 100542 369.97 1321 1289 268.3
A 9 143 44920 162.64 1321 1289 268.3
A 8 15 30228 107.87 1321 1289 268.3
B 0 189 169341 671.58 1321 1285 250.2
B 0 229 133113 526.81 1321 1285 250.2
B 3 209 94736 373.45 1321 1285 250.2
C 3 233 195233 656.9 1279 1283 295.2
C 0 207 20865 66.32 1279 1283 295.2
C 8 128 11087 33.21 1279 1283 295.2
D 1 52 8784616 32535.19 1061 1030 270.0
D 2 152 503140 1859.86 1061 1030 270.0
D 8 195 383471 1416.6 1061 1030 270.0

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