ASTROSAT CZTI

Data Quality Report

Orbit 20170619_G07_076T02_9000001320_level2

Creation date: 2025-11-14T16:50:20.516330
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/AS1G07_076T02_9000001320cztM0_level2.fits modeM0/AS1G07_076T02_9000001320cztM0_level2_quad_clean.evt
Size (bytes)119,059,20088,980,480
Size113.5 MB 84.9 MB
Events in quadrant A732,866500,785
Events in quadrant B707,768507,457
Events in quadrant C715,100478,808
Events in quadrant D567,734325,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342830
B0273010
C0290090
D0418730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02690
B02620
C02620
D02620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126892872.261802%
B127451631.278933%
C127662862.240326%
D12719214216.840947%

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 16434 13059 0 0 0.00% 0.00%
B 16434 13114 0 0 0.00% 0.00%
C 16432 13142 0 0 0.00% 0.00%
D 16434 12960 0 0 0.00% 0.00%

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 14 188 748 11.47 190 178 49.7
A 0 29 733 11.17 190 178 49.7
A 14 204 660 9.7 190 178 49.7
B 2 9 656 12.08 186 178 39.6
B 3 17 487 7.81 186 178 39.6
B 2 8 485 7.76 186 178 39.6
C 7 111 509 6.45 188 175 51.8
C 2 191 508 6.43 188 175 51.8
C 3 126 491 6.1 188 175 51.8
D 6 67 415 5.84 161 147 45.9
D 4 160 408 5.69 161 147 45.9
D 6 231 405 5.63 161 147 45.9

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