ASTROSAT CZTI

Data Quality Report

Orbit 11706

Creation date: 2024-06-27T16:17:09.166645
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/AS1A04_227T01_9000001724_11706cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11706cztM0_level2_quad_clean.evt
Size (bytes)830,543,04085,826,880
Size792.1 MB 81.9 MB
Events in quadrant A6,715,203548,952
Events in quadrant B4,309,024569,958
Events in quadrant C3,064,102579,890
Events in quadrant D10,618,638437,727

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246023
B0171122
C0135022
D0361132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A660970310.637010%
B66093054.614919%
C6609280.423665%
D6609268640.641549%

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 8660 6612 526 526 6.07% 7.96%
B 8660 6612 137 137 1.58% 2.07%
C 8660 6612 0 0 0.00% 0.00%
D 8660 6612 2528 2528 29.19% 38.23%

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 8 5 3145084 19934.96 778 761 157.7
A 1 162 162677 1026.55 778 761 157.7
A 1 178 89262 561.1 778 761 157.7
B 4 239 533536 3522.35 791 772 151.3
B 3 64 289888 1911.48 791 772 151.3
B 0 85 117058 768.82 791 772 151.3
C 13 61 5738 27.13 785 790 182.3
C 8 222 2989 12.06 785 790 182.3
C 3 202 1846 5.79 785 790 182.3
D 13 152 7462744 45524.05 678 661 163.9
D 10 157 229745 1397.58 678 661 163.9
D 13 104 102646 622.18 678 661 163.9

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