ASTROSAT CZTI

Data Quality Report

Orbit 36053

Creation date: 2022-08-10T01:52:54.383531
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/AS1T04_069T01_9000005158_36053cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36053cztM0_level2_quad_clean.evt
Size (bytes)485,807,04065,240,640
Size463.3 MB 62.2 MB
Events in quadrant A2,628,476418,190
Events in quadrant B3,533,923405,862
Events in quadrant C4,117,210386,488
Events in quadrant D4,057,249376,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114903
B0141332
C0158542
D0158522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5535130.234869%
B55351893.414634%
C55353376.088528%
D55353336.016260%

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 7149 5536 0 0 0.00% 0.00%
B 7149 5536 110 110 1.54% 1.99%
C 7149 5536 262 262 3.66% 4.73%
D 7149 5536 303 303 4.24% 5.47%

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 10 83 177840 1377.69 628 615 128.6
A 13 254 9074 65.76 628 615 128.6
A 13 6 7724 55.26 628 615 128.6
B 5 236 726017 6042.74 618 602 120.0
B 0 190 175416 1456.21 618 602 120.0
B 4 232 77104 637.27 618 602 120.0
C 9 187 1255266 9063.72 589 592 138.4
C 15 214 225181 1622.42 589 592 138.4
C 0 10 186366 1342.02 589 592 138.4
D 12 6 547143 3770.74 590 573 145.0
D 1 52 388405 2675.62 590 573 145.0
D 7 223 183047 1258.87 590 573 145.0

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