ASTROSAT CZTI

Data Quality Report

Orbit 39694

Creation date: 2024-06-27T22:07:49.805665
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_051T01_9000005490_39694cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39694cztM0_level2_quad_clean.evt
Size (bytes)479,479,68086,158,080
Size457.3 MB 82.2 MB
Events in quadrant A7,343,401510,343
Events in quadrant B2,557,543634,439
Events in quadrant C4,583,529569,180
Events in quadrant D2,878,818546,019

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252723
B0108202
C0170492
D0120552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4973120024.130304%
B4973230.462497%
C49732845.710839%
D4973641.286950%

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 7095 4974 1032 1032 14.55% 20.75%
B 7095 4974 12 12 0.17% 0.24%
C 7095 4974 321 321 4.52% 6.45%
D 7095 4974 58 58 0.82% 1.17%

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 15 222 4789145 43943.28 535 526 109.0
A 10 83 413715 3791.67 535 526 109.0
A 15 174 55523 504.69 535 526 109.0
B 5 172 149836 1369.67 571 556 109.0
B 5 32 59425 540.13 571 556 109.0
B 5 255 56247 510.97 571 556 109.0
C 9 187 1382566 10959.64 538 543 126.1
C 15 208 799198 6333.45 538 543 126.1
C 15 214 202319 1600.11 538 543 126.1
D 13 249 168664 1280.42 544 530 131.3
D 12 218 134211 1018.04 544 530 131.3
D 2 153 116436 882.68 544 530 131.3

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