ASTROSAT CZTI

Data Quality Report

Orbit 08331

Creation date: 2024-06-27T15:31:13.601317
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_029T01_9000001158_08331cztM0_level2.evt modeM0/AS1G07_029T01_9000001158_08331cztM0_level2_quad_clean.evt
Size (bytes)412,067,52082,929,600
Size393.0 MB 79.1 MB
Events in quadrant A3,009,927517,352
Events in quadrant B2,988,308522,823
Events in quadrant C3,193,362517,312
Events in quadrant D2,847,874502,758

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131792
B0132831
C0140151
D0133021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6464210.324876%
B6464220.340347%
C6464741.144802%
D6464120.185644%

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 7344 6465 0 0 0.00% 0.00%
B 7344 6465 1 1 0.01% 0.02%
C 7344 6465 52 52 0.71% 0.80%
D 7344 6465 5 5 0.07% 0.08%

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 15 234 155017 1005.72 739 724 153.4
A 14 111 7712 45.55 739 724 153.4
A 13 248 7467 43.95 739 724 153.4
B 4 81 46349 317.22 744 724 143.8
B 0 214 36892 251.47 744 724 143.8
B 12 111 16060 106.63 744 724 143.8
C 9 54 388233 2315.85 719 722 167.3
C 13 61 5501 28.56 719 722 167.3
C 3 202 1818 6.55 719 722 167.3
D 2 14 46316 265.04 715 697 172.1
D 2 152 40026 228.49 715 697 172.1
D 5 81 24323 137.26 715 697 172.1

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