ASTROSAT CZTI

Data Quality Report

Orbit 33075

Creation date: 2024-06-27T20:44:41.480149
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/AS1A11_007T07_9000004758_33075cztM0_level2.evt modeM0/AS1A11_007T07_9000004758_33075cztM0_level2_quad_clean.evt
Size (bytes)734,765,76086,336,640
Size700.7 MB 82.3 MB
Events in quadrant A2,586,958662,627
Events in quadrant B4,227,201616,229
Events in quadrant C3,096,063640,397
Events in quadrant D11,997,299335,853

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107202
B0158011
C0123041
D0391761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511040.078278%
B511056811.115460%
C5110811.585127%
D5110409080.039139%

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 7144 5111 1 1 0.01% 0.02%
B 7144 5111 397 397 5.56% 7.77%
C 7144 5111 69 69 0.97% 1.35%
D 7144 5111 4017 4017 56.23% 78.60%

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 13 254 10669 76.73 661 652 130.6
A 14 235 9896 70.81 661 652 130.6
A 15 169 8983 63.81 661 652 130.6
B 5 172 1475451 12820.86 621 607 115.0
B 5 200 116596 1008.3 621 607 115.0
B 0 189 62582 538.75 621 607 115.0
C 8 111 193200 1324.47 636 645 145.4
C 1 241 152311 1043.22 636 645 145.4
C 7 221 142734 977.34 636 645 145.4
D 7 223 7705954 69463.24 422 414 110.9
D 12 218 1168269 10527.88 422 414 110.9
D 8 195 846270 7625.15 422 414 110.9

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