ASTROSAT CZTI

Data Quality Report

Orbit 50346

Creation date: 2025-01-18T12:20:29.401079
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/AS1C09_003T01_9000006442_50346cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50346cztM0_level2_quad_clean.evt
Size (bytes)791,622,72083,344,320
Size755.0 MB 79.5 MB
Events in quadrant A4,401,483616,793
Events in quadrant B5,523,416625,812
Events in quadrant C8,263,235454,489
Events in quadrant D10,611,523371,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174011
B0208351
C0289211
D0359988

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65151442.210284%
B651669110.604665%
C6516183628.176796%
D6515246637.851113%

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 7595 6515 84 84 1.11% 1.29%
B 7596 6516 570 570 7.50% 8.75%
C 7595 6515 1816 1816 23.91% 27.87%
D 7595 6515 2658 2658 35.00% 40.80%

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 4 3 414673 2372.04 702 686 174.5
A 3 231 321025 1835.46 702 686 174.5
A 12 250 153337 874.65 702 686 174.5
B 1 238 1176561 8202.2 673 651 143.4
B 10 44 573477 3995.57 673 651 143.4
B 4 216 274447 1909.78 673 651 143.4
C 0 208 3352872 20595.31 571 567 162.8
C 13 3 314063 1926.0 571 567 162.8
C 0 225 293653 1800.61 571 567 162.8
D 7 61 4826900 31693.75 534 515 152.3
D 12 6 1025488 6730.76 534 515 152.3
D 2 165 858889 5636.74 534 515 152.3

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