ASTROSAT CZTI

Data Quality Report

Orbit 18862

Creation date: 2024-06-27T17:55:47.695937
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_094T01_9000002816_18862cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18862cztM0_level2_quad_clean.evt
Size (bytes)512,968,32086,273,280
Size489.2 MB 82.3 MB
Events in quadrant A3,199,306553,401
Events in quadrant B3,469,099561,626
Events in quadrant C3,270,744536,396
Events in quadrant D5,164,629517,282

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131641
B0140011
C0132621
D0194901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6363931.461575%
B63641211.901320%
C63641101.728473%
D63643685.782527%

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 7393 6365 0 0 0.00% 0.00%
B 7394 6366 11 11 0.15% 0.17%
C 7394 6366 1 1 0.01% 0.02%
D 7394 6366 254 254 3.44% 3.99%

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 4 2 12699 71.4 823 807 166.5
A 15 191 10207 56.44 823 807 166.5
A 13 254 9376 51.45 823 807 166.5
B 7 220 118824 763.84 812 793 154.5
B 0 189 41411 262.86 812 793 154.5
B 4 216 37106 235.0 812 793 154.5
C 14 238 120085 658.12 779 785 181.3
C 3 233 102579 561.55 779 785 181.3
C 0 207 13595 70.67 779 785 181.3
D 7 238 1741594 9087.14 786 764 191.6
D 1 52 201858 1049.71 786 764 191.6
D 7 38 103741 537.54 786 764 191.6

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