ASTROSAT CZTI

Data Quality Report

Orbit 42994

Creation date: 2024-06-27T22:46:40.167652
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/AS1T05_148T01_9000005838_42994cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42994cztM0_level2_quad_clean.evt
Size (bytes)480,545,280119,010,240
Size458.3 MB 113.5 MB
Events in quadrant A3,483,710871,416
Events in quadrant B3,405,107869,477
Events in quadrant C6,421,520765,646
Events in quadrant D4,076,396734,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138242
B0133872
C0227242
D0156672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5184711.369599%
B5184871.678241%
C518470213.541667%
D51842184.205247%

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 7097 5185 44 44 0.62% 0.85%
B 7097 5185 39 39 0.55% 0.75%
C 7097 5185 803 803 11.31% 15.49%
D 7097 5185 213 213 3.00% 4.11%

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 10 83 580037 3640.02 695 681 159.2
A 15 237 163536 1023.2 695 681 159.2
A 15 222 28892 177.25 695 681 159.2
B 4 171 604111 4057.91 682 667 148.7
B 5 255 49707 329.77 682 667 148.7
B 4 81 24187 158.16 682 667 148.7
C 5 250 3735319 22338.89 629 630 167.2
C 15 214 201956 1204.22 629 630 167.2
C 5 233 30909 181.11 629 630 167.2
D 1 47 530670 2961.22 657 633 179.0
D 12 233 324385 1808.74 657 633 179.0
D 13 249 272070 1516.47 657 633 179.0

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