ASTROSAT CZTI

Data Quality Report

Orbit 37506

Creation date: 2024-06-27T21:40:53.788100
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_030T02_9000005328_37506cztM0_level2.evt modeM0/AS1A11_030T02_9000005328_37506cztM0_level2_quad_clean.evt
Size (bytes)486,072,00090,852,480
Size463.6 MB 86.6 MB
Events in quadrant A2,898,188618,392
Events in quadrant B3,410,703620,052
Events in quadrant C3,176,764616,820
Events in quadrant D4,896,479545,459

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117473
B0132802
C0123992
D0181272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4998140.280112%
B49982565.122049%
C49981152.300920%
D49984118.223289%

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 7089 4999 12 12 0.17% 0.24%
B 7089 4999 206 206 2.91% 4.12%
C 7089 4999 99 99 1.40% 1.98%
D 7089 4999 425 425 6.00% 8.50%

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 273439 2198.91 611 601 124.1
A 15 222 196333 1577.48 611 601 124.1
A 6 10 28045 221.18 611 601 124.1
B 5 172 491213 4306.14 603 588 113.9
B 5 255 409656 3590.32 603 588 113.9
B 0 190 41122 355.76 603 588 113.9
C 14 254 497132 3506.37 602 607 141.6
C 15 214 213727 1505.02 602 607 141.6
C 0 10 103609 727.38 602 607 141.6
D 1 52 1254998 8880.98 576 562 141.2
D 2 249 788434 5577.86 576 562 141.2
D 13 249 364736 2578.23 576 562 141.2

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