ASTROSAT CZTI

Data Quality Report

Orbit 51203

Creation date: 2025-03-17T13:25:05.401870
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/AS1C07_001T01_9000006454_51203cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51203cztM0_level2_quad_clean.evt
Size (bytes)655,122,24090,224,640
Size624.8 MB 86.0 MB
Events in quadrant A4,722,368609,438
Events in quadrant B6,870,471615,266
Events in quadrant C7,999,360508,474
Events in quadrant D4,166,453554,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184932
B0248552
C0282314
D0170572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63591292.028621%
B636088013.836478%
C6359131920.742255%
D63592203.459663%

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 7504 6360 70 70 0.93% 1.10%
B 7505 6361 721 721 9.61% 11.33%
C 7503 6359 1189 1189 15.85% 18.70%
D 7504 6360 151 151 2.01% 2.37%

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 3 1106616 6651.91 666 648 166.3
A 9 160 170699 1022.78 666 648 166.3
A 12 194 128432 768.56 666 648 166.3
B 10 254 1869132 13638.04 649 628 137.0
B 8 128 757004 5520.72 649 628 137.0
B 0 213 547755 3993.43 649 628 137.0
C 4 12 2871824 16983.93 607 599 169.1
C 10 171 890686 5265.06 607 599 169.1
C 1 60 515237 3044.2 607 599 169.1
D 3 12 464191 2527.58 641 617 183.4
D 10 172 250771 1363.93 641 617 183.4
D 2 62 211394 1149.23 641 617 183.4

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