ASTROSAT CZTI

Data Quality Report

Orbit 33954

Creation date: 2024-06-27T20:54:40.889127
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_074T01_9000004852_33954cztM0_level2.evt modeM0/AS1T04_074T01_9000004852_33954cztM0_level2_quad_clean.evt
Size (bytes)503,818,56061,130,880
Size480.5 MB 58.3 MB
Events in quadrant A2,910,604377,429
Events in quadrant B3,115,096383,966
Events in quadrant C3,046,186372,925
Events in quadrant D5,818,151335,968

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121573
B0127362
C0120932
D0210982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5436440.809419%
B5436841.545254%
C5436731.342899%
D543655710.246505%

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 7109 5437 37 37 0.52% 0.68%
B 7109 5437 40 40 0.56% 0.74%
C 7109 5437 56 56 0.79% 1.03%
D 7109 5437 511 511 7.19% 9.40%

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 15 169 412858 3170.79 640 626 130.0
A 10 83 14746 108.61 640 626 130.0
A 13 254 10090 72.79 640 626 130.0
B 5 172 316213 2512.39 641 623 125.6
B 0 219 83503 659.8 641 623 125.6
B 4 232 77366 610.95 641 623 125.6
C 0 10 269582 1845.86 623 627 145.7
C 15 214 236839 1621.14 623 627 145.7
C 3 233 72972 496.51 623 627 145.7
D 8 195 1294939 8739.89 599 581 148.1
D 7 238 979693 6611.26 599 581 148.1
D 12 6 549598 3707.13 599 581 148.1

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