ASTROSAT CZTI

Data Quality Report

Orbit 44256

Creation date: 2024-06-27T23:01:02.717961
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/AS1A13_079T01_9000005978_44256cztM0_level2.fits modeM0/AS1A13_079T01_9000005978_44256cztM0_level2_quad_clean.evt
Size (bytes)571,841,280110,992,320
Size545.4 MB 105.9 MB
Events in quadrant A6,179,216719,487
Events in quadrant B3,667,687813,966
Events in quadrant C3,149,602786,309
Events in quadrant D7,617,871545,189

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236591
B0156841
C0147151
D0275391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A711485412.004498%
B71141512.122575%
C7114690.969918%
D7114200028.113579%

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 8164 7114 637 637 7.80% 8.95%
B 8164 7114 43 43 0.53% 0.60%
C 8164 7115 5 5 0.06% 0.07%
D 8164 7114 1170 1170 14.33% 16.45%

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 15 223 1759638 11383.19 749 735 154.5
A 10 83 1384378 8954.6 749 735 154.5
A 7 3 94782 608.65 749 735 154.5
B 4 158 166940 1057.71 793 769 157.1
B 5 255 105276 665.21 793 769 157.1
B 0 155 86154 543.49 793 769 157.1
C 14 254 89760 487.01 777 778 182.7
C 3 233 13754 71.02 777 778 182.7
C 2 14 11562 59.02 777 778 182.7
D 4 221 4123129 24489.62 665 644 168.3
D 1 52 487119 2889.91 665 644 168.3
D 5 235 97722 576.69 665 644 168.3

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