ASTROSAT CZTI

Data Quality Report

Orbit 49869

Creation date: 2024-12-17T09:30:54.888821
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/AS1A13_037T01_9000006440_49869cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49869cztM0_level2_quad_clean.evt
Size (bytes)1,069,905,60045,239,040
Size1020.3 MB 43.1 MB
Events in quadrant A11,488,114289,301
Events in quadrant B4,036,888641,947
Events in quadrant C10,886,7668,258
Events in quadrant D12,724,8528,909

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383066
B0160821
C0365301
D0419741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6031340156.391975%
B60313085.106947%
C6032597499.038462%
D6032595998.789788%

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 7245 6030 3238 3238 44.69% 53.70%
B 7246 6031 123 123 1.70% 2.04%
C 7246 6031 2462 2462 33.98% 40.82%
D 7246 6031 4011 4011 55.35% 66.51%

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 4 6835317 59209.45 439 428 115.4
A 8 62 772783 6690.78 439 428 115.4
A 8 38 319411 2763.29 439 428 115.4
B 4 206 610320 4354.36 666 647 140.0
B 0 213 229560 1634.93 666 647 140.0
B 0 229 179600 1278.11 666 647 140.0
C 4 111 2588577 82678.63 98 97 31.3
C 15 196 2036494 65044.55 98 97 31.3
C 15 197 1266009 40434.49 98 97 31.3
D 7 61 9250853 241766.95 109 104 38.3
D 15 185 1040582 27192.74 109 104 38.3
D 8 176 580293 15163.15 109 104 38.3

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