ASTROSAT CZTI

Data Quality Report

Orbit 34210

Creation date: 2022-01-25T15:07:50.529641
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_086T01_9000004884_34210cztM0_level2.evt modeM0/AS1T04_086T01_9000004884_34210cztM0_level2_quad_clean.evt
Size (bytes)578,986,56088,439,040
Size552.2 MB 84.3 MB
Events in quadrant A2,686,065582,587
Events in quadrant B7,278,762532,658
Events in quadrant C3,104,727593,294
Events in quadrant D4,069,505560,974

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118383
B0256052
C0126192
D0159472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A584550.085543%
B5845146225.012831%
C5845380.650128%
D58451292.207015%

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 7187 5846 0 0 0.00% 0.00%
B 7187 5846 1063 1063 14.79% 18.18%
C 7187 5846 22 22 0.31% 0.38%
D 7187 5846 104 104 1.45% 1.78%

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 9 143 23894 171.15 676 662 135.7
A 10 83 23589 168.9 676 662 135.7
A 13 6 18122 128.62 676 662 135.7
B 5 31 2579214 21441.99 619 603 120.3
B 5 172 1151150 9567.17 619 603 120.3
B 5 15 860366 7149.21 619 603 120.3
C 15 214 272358 1806.93 659 667 150.4
C 0 10 144141 954.2 659 667 150.4
C 4 254 76974 507.49 659 667 150.4
D 8 195 760494 4728.8 659 641 160.7
D 10 118 175832 1090.27 659 641 160.7
D 13 249 171624 1064.08 659 641 160.7

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