ASTROSAT CZTI

Data Quality Report

Orbit 11023

Creation date: 2024-06-27T16:07:11.271577
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/AS1G08_046T09_9000001600_11023cztM0_level2.evt modeM0/AS1G08_046T09_9000001600_11023cztM0_level2_quad_clean.evt
Size (bytes)1,167,140,160152,870,400
Size1.1 GB 145.8 MB
Events in quadrant A10,348,738925,698
Events in quadrant B8,993,736937,852
Events in quadrant C5,863,080955,779
Events in quadrant D9,251,919898,752

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396257
B0357333
C0267353
D0364603

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131859126.916951%
B131868826.688912%
C13186380.288184%
D131864353.298953%

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 15166 13189 655 655 4.32% 4.97%
B 15166 13188 504 504 3.32% 3.82%
C 15166 13189 6 6 0.04% 0.05%
D 15166 13189 332 332 2.19% 2.52%

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 8 5 4311491 14167.88 1493 1454 304.2
A 8 15 142170 462.56 1493 1454 304.2
A 14 238 103964 336.97 1493 1454 304.2
B 4 239 2895713 10104.13 1500 1461 286.4
B 4 81 67280 229.78 1500 1461 286.4
B 0 214 49598 168.05 1500 1461 286.4
C 14 234 35590 98.38 1494 1500 346.5
C 13 61 10916 27.17 1494 1500 346.5
C 8 222 4794 9.51 1494 1500 346.5
D 11 129 1242770 3471.34 1475 1434 357.6
D 1 52 834521 2329.69 1475 1434 357.6
D 8 195 514553 1434.91 1475 1434 357.6

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