ASTROSAT CZTI

Data Quality Report

Orbit 25210

Creation date: 2024-06-27T19:15:06.688339
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/AS1A07_097T01_9000003692_25210cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25210cztM0_level2_quad_clean.evt
Size (bytes)485,513,28083,278,080
Size463.0 MB 79.4 MB
Events in quadrant A3,050,436534,357
Events in quadrant B3,159,863538,603
Events in quadrant C3,295,478511,925
Events in quadrant D4,769,037495,822

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128830
B0131470
C0136040
D0183670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6315490.775930%
B6315540.855107%
C6315771.219319%
D63153916.191607%

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 7301 6317 0 0 0.00% 0.00%
B 7301 6317 1 1 0.01% 0.02%
C 7301 6316 2 2 0.03% 0.03%
D 7301 6316 291 291 3.99% 4.61%

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 13 254 10271 59.33 791 774 160.1
A 3 137 7298 40.76 791 774 160.1
A 0 226 6904 38.3 791 774 160.1
B 3 64 41780 270.95 780 759 151.4
B 0 190 35917 232.23 780 759 151.4
B 10 251 18823 119.32 780 759 151.4
C 7 247 234792 1334.18 744 749 175.4
C 14 238 120732 683.97 744 749 175.4
C 2 16 33632 187.45 744 749 175.4
D 10 70 744540 4091.66 748 725 181.8
D 1 52 648692 3564.41 748 725 181.8
D 8 195 306738 1683.35 748 725 181.8

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