ASTROSAT CZTI

Data Quality Report

Orbit 41637

Creation date: 2024-06-27T22:31:02.103846
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/AS1A12_035T02_9000005680_41637cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41637cztM0_level2_quad_clean.evt
Size (bytes)524,139,84079,830,720
Size499.9 MB 76.1 MB
Events in quadrant A2,779,166599,607
Events in quadrant B2,449,596609,567
Events in quadrant C3,099,481555,118
Events in quadrant D10,662,803282,591

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114513
B0110082
C0123932
D0353232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A528660.113507%
B5286210.397276%
C52862124.010594%
D5286279752.913356%

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 7110 5287 3 3 0.04% 0.06%
B 7110 5287 9 9 0.13% 0.17%
C 7110 5287 199 199 2.80% 3.76%
D 7110 5286 3002 3002 42.22% 56.79%

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 10 83 513247 4315.77 580 569 118.8
A 2 79 12493 100.38 580 569 118.8
A 13 254 10413 82.87 580 569 118.8
B 4 171 97269 868.83 577 562 111.3
B 0 186 32354 285.63 577 562 111.3
B 5 255 22812 199.9 577 562 111.3
C 0 10 523723 4020.73 557 561 130.1
C 15 214 213803 1638.86 557 561 130.1
C 14 254 124399 951.75 557 561 130.1
D 12 79 7990943 69768.97 459 445 114.5
D 13 249 546246 4765.66 459 445 114.5
D 2 249 142832 1243.25 459 445 114.5

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