ASTROSAT CZTI

Data Quality Report

Orbit 42014

Creation date: 2024-06-27T22:35:45.141525
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_011T26_9000005732_42014cztM0_level2.fits modeM0/AS1A12_011T26_9000005732_42014cztM0_level2_quad_clean.evt
Size (bytes)883,019,520230,094,720
Size842.1 MB 219.4 MB
Events in quadrant A7,971,8021,556,019
Events in quadrant B6,789,8401,609,468
Events in quadrant C6,477,6901,528,670
Events in quadrant D10,373,6331,315,645

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315234
B0296357
C0280125
D04021514

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0600
C0600
D0600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138571240.894855%
B13856580.418591%
C13857110.079382%
D138549757.037679%

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 19718 13860 68 68 0.34% 0.49%
B 19718 13860 23 23 0.12% 0.17%
C 19718 13860 6 6 0.03% 0.04%
D 19718 13858 879 879 4.46% 6.34%

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 1376523 4417.5 1532 1501 311.3
A 15 223 416932 1334.65 1532 1501 311.3
A 12 189 184369 587.5 1532 1501 311.3
B 0 190 443474 1529.33 1521 1481 289.0
B 5 255 106214 362.38 1521 1481 289.0
B 4 171 85460 290.57 1521 1481 289.0
C 15 214 577442 1680.81 1488 1496 342.7
C 15 111 59166 168.3 1488 1496 342.7
C 8 79 26361 72.56 1488 1496 342.7
D 2 249 1798408 5109.9 1438 1398 351.7
D 13 249 1223354 3474.7 1438 1398 351.7
D 1 52 1130114 3209.57 1438 1398 351.7

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