ASTROSAT CZTI

Data Quality Report

Orbit 26464

Creation date: 2024-06-27T19:29:22.117446
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/AS1A09_104T02_9000003826_26464cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26464cztM0_level2_quad_clean.evt
Size (bytes)702,077,76095,103,360
Size669.6 MB 90.7 MB
Events in quadrant A3,643,370627,399
Events in quadrant B3,910,399636,236
Events in quadrant C4,872,438598,456
Events in quadrant D8,320,492487,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157340
B0164010
C0192200
D0300240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7616350.459559%
B7615961.260670%
C76153915.134603%
D7616157820.719538%

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 8651 7619 0 0 0.00% 0.00%
B 8650 7618 20 20 0.23% 0.26%
C 8650 7618 203 203 2.35% 2.66%
D 8651 7618 1332 1332 15.40% 17.48%

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 13 254 11688 55.88 944 924 192.6
A 3 137 9157 42.74 944 924 192.6
A 0 226 8045 36.97 944 924 192.6
B 5 172 155479 847.81 942 919 182.3
B 0 190 27631 146.52 942 919 182.3
B 12 111 22243 116.97 942 919 182.3
C 2 16 753809 3573.52 890 894 210.7
C 4 254 288456 1364.84 890 894 210.7
C 3 233 221177 1045.52 890 894 210.7
D 1 52 3249937 16984.15 795 778 191.3
D 7 80 1396983 7298.3 795 778 191.3
D 12 233 591666 3088.72 795 778 191.3

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