ASTROSAT CZTI

Data Quality Report

Orbit 18594

Creation date: 2024-06-27T17:52:06.594267
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/AS1A05_075T05_9000002764_18594cztM0_level2.evt modeM0/AS1A05_075T05_9000002764_18594cztM0_level2_quad_clean.evt
Size (bytes)1,747,932,480273,775,680
Size1.6 GB 261.1 MB
Events in quadrant A11,421,4611,696,630
Events in quadrant B10,882,1201,746,595
Events in quadrant C15,049,4481,601,978
Events in quadrant D14,019,3751,652,378

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494584
B0473464
C0593464
D0571284

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231534001.727638%
B231531680.725608%
C2315319988.629551%
D231535652.440289%

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 26662 23156 186 186 0.70% 0.80%
B 26662 23156 6 6 0.02% 0.03%
C 26662 23156 1343 1343 5.04% 5.80%
D 26662 23156 390 390 1.46% 1.68%

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 0 13 887108 1613.2 2725 2664 548.3
A 13 254 36519 61.75 2725 2664 548.3
A 0 226 23573 38.14 2725 2664 548.3
B 12 111 63872 117.42 2732 2657 521.3
B 0 229 58962 108.0 2732 2657 521.3
B 11 111 56169 102.65 2732 2657 521.3
C 4 254 4281327 7280.28 2517 2527 587.7
C 3 233 513774 869.87 2517 2527 587.7
C 14 238 391092 661.13 2517 2527 587.7
D 1 52 1425758 2229.46 2647 2570 638.4
D 7 238 1247645 1950.44 2647 2570 638.4
D 5 222 966392 1509.85 2647 2570 638.4

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