ASTROSAT CZTI

Data Quality Report

Orbit 22780

Creation date: 2024-06-27T18:45:38.574920
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/AS1T03_168T01_9000003368_22780cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22780cztM0_level2_quad_clean.evt
Size (bytes)457,490,880136,304,640
Size436.3 MB 130.0 MB
Events in quadrant A3,171,413933,079
Events in quadrant B3,306,787951,404
Events in quadrant C3,304,499908,015
Events in quadrant D3,630,732882,827

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135232
B0138792
C0139162
D0147612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6506310.476483%
B6506420.645558%
C6506961.475561%
D65061071.644636%

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 7651 6507 0 0 0.00% 0.00%
B 7651 6507 4 4 0.05% 0.06%
C 7651 6507 8 8 0.10% 0.12%
D 7651 6507 71 71 0.93% 1.09%

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 11517 65.8 822 808 162.8
A 0 226 7001 38.05 822 808 162.8
A 3 137 6337 33.97 822 808 162.8
B 0 230 37408 239.61 824 803 152.8
B 0 228 28565 181.73 824 803 152.8
B 12 111 17800 111.26 824 803 152.8
C 14 238 130335 704.1 801 806 184.0
C 10 22 31664 167.74 801 806 184.0
C 2 16 16321 84.34 801 806 184.0
D 1 52 428484 2223.53 805 781 192.4
D 12 227 60944 312.77 805 781 192.4
D 2 153 26717 134.84 805 781 192.4

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