ASTROSAT CZTI

Data Quality Report

Orbit 50129

Creation date: 2025-01-04T19:31:20.118753
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_50129cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50129cztM0_level2_quad_clean.evt
Size (bytes)1,222,701,12045,601,920
Size1.1 GB 43.5 MB
Events in quadrant A15,644,57418,069
Events in quadrant B3,966,124632,526
Events in quadrant C12,968,05256,494
Events in quadrant D12,215,070250,212

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505697
B0158871
C0426711
D0404771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6061592397.723148%
B60612043.365781%
C6062554891.520950%
D6062357859.023425%

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 7201 6061 5583 5583 77.53% 92.11%
B 7201 6062 130 130 1.81% 2.14%
C 7201 6061 3862 3862 53.63% 63.72%
D 7202 6062 3162 3162 43.90% 52.16%

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 6 250 11417534 148847.72 273 265 76.7
A 4 13 644605 8400.3 273 265 76.7
A 8 8 593347 7732.05 273 265 76.7
B 2 176 391875 2928.76 626 607 133.6
B 4 170 212904 1589.11 626 607 133.6
B 0 200 135526 1009.91 626 607 133.6
C 4 111 5030973 87672.69 196 194 57.4
C 15 214 4532992 78994.24 196 194 57.4
C 15 197 621787 10832.66 196 194 57.4
D 15 168 2204877 16606.43 452 435 132.7
D 12 6 1168781 8801.35 452 435 132.7
D 15 106 1144096 8615.39 452 435 132.7

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