ASTROSAT CZTI

Data Quality Report

Orbit 12250

Creation date: 2024-06-27T16:24:28.566901
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/AS1C03_005T01_9000001810_12250cztM0_level2.evt modeM0/AS1C03_005T01_9000001810_12250cztM0_level2_quad_clean.evt
Size (bytes)579,709,440137,862,720
Size552.9 MB 131.5 MB
Events in quadrant A4,376,630924,393
Events in quadrant B4,780,944916,219
Events in quadrant C3,583,076921,741
Events in quadrant D4,294,898878,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181193
B0193592
C0162202
D0182642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76871632.120463%
B76874015.216599%
C7687480.624431%
D76882232.900624%

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 8203 7691 14 14 0.17% 0.18%
B 8203 7691 193 193 2.35% 2.51%
C 8203 7691 21 21 0.26% 0.27%
D 8204 7692 136 136 1.66% 1.77%

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 13 251 376923 2073.44 883 865 181.4
A 1 162 127306 697.15 883 865 181.4
A 9 143 102122 558.29 883 865 181.4
B 4 239 994461 6059.43 873 852 164.0
B 0 219 140830 853.64 873 852 164.0
B 0 229 49096 294.21 873 852 164.0
C 15 208 173733 876.9 850 853 197.1
C 1 16 39852 197.81 850 853 197.1
C 4 175 34981 173.11 850 853 197.1
D 1 52 343670 1671.6 841 815 205.1
D 10 199 209469 1017.3 841 815 205.1
D 13 172 191228 928.37 841 815 205.1

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