ASTROSAT CZTI

Data Quality Report

Orbit 25358

Creation date: 2024-06-27T19:16:44.756118
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/AS1A09_059T01_9000003706_25358cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25358cztM0_level2_quad_clean.evt
Size (bytes)426,689,28062,346,240
Size406.9 MB 59.5 MB
Events in quadrant A2,852,029406,781
Events in quadrant B2,416,461411,039
Events in quadrant C3,069,609375,435
Events in quadrant D4,273,974372,915

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116490
B098590
C0120010
D0159910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4572240.524934%
B4572250.546807%
C45721813.958880%
D45721332.909011%

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 4572 4572 1 1 0.02% 0.02%
B 4572 4572 1 1 0.02% 0.02%
C 4572 4572 46 46 1.01% 1.01%
D 4572 4572 116 116 2.54% 2.54%

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 6 16 475554 3908.59 612 601 121.5
A 15 173 12183 95.31 612 601 121.5
A 13 254 6723 50.38 612 601 121.5
B 0 229 20850 179.81 604 591 112.7
B 3 112 19048 163.81 604 591 112.7
B 0 190 13433 113.98 604 591 112.7
C 9 54 720123 5454.61 570 575 131.9
C 14 238 94736 713.8 570 575 131.9
C 3 233 34678 258.52 570 575 131.9
D 9 35 1548947 10894.45 585 568 142.1
D 1 52 346839 2436.38 585 568 142.1
D 8 195 121319 849.61 585 568 142.1

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