ASTROSAT CZTI

Data Quality Report

Orbit 22827

Creation date: 2024-06-27T18:46:18.533625
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/AS1C05_012T02_9000003372_22827cztM0_level2.evt modeM0/AS1C05_012T02_9000003372_22827cztM0_level2_quad_clean.evt
Size (bytes)416,229,120101,226,240
Size396.9 MB 96.5 MB
Events in quadrant A3,065,399691,767
Events in quadrant B2,847,703697,224
Events in quadrant C2,776,301643,625
Events in quadrant D3,529,271635,234

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125271
B0118611
C0117121
D0141771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5696571.000702%
B5697420.737230%
C5697581.018080%
D56971272.229243%

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 7016 5697 0 0 0.00% 0.00%
B 7017 5698 1 1 0.01% 0.02%
C 7017 5698 1 1 0.01% 0.02%
D 7017 5698 71 71 1.01% 1.25%

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 11 47 248698 1721.42 730 718 144.1
A 13 254 9954 64.11 730 718 144.1
A 0 226 6450 39.79 730 718 144.1
B 0 230 41635 308.88 715 700 132.5
B 12 111 15424 111.1 715 700 132.5
B 11 111 14107 101.16 715 700 132.5
C 14 238 113362 723.89 679 684 155.7
C 10 22 9643 57.56 679 684 155.7
C 13 61 4773 26.27 679 684 155.7
D 7 238 351755 2100.72 696 674 167.1
D 1 52 262202 1564.87 696 674 167.1
D 2 136 151400 901.88 696 674 167.1

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