ASTROSAT CZTI

Data Quality Report

Orbit 26604

Creation date: 2024-06-27T19:30:54.150530
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_095T02_9000003846_26604cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26604cztM0_level2_quad_clean.evt
Size (bytes)710,159,040106,931,520
Size677.3 MB 102.0 MB
Events in quadrant A3,181,958753,620
Events in quadrant B4,699,140730,402
Events in quadrant C3,355,634716,591
Events in quadrant D9,868,986621,639

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131240
B0181940
C0136780
D0334290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5946520.874538%
B59474627.768623%
C59471021.715150%
D5947206934.790651%

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 7261 5946 1 1 0.01% 0.02%
B 7262 5948 347 347 4.78% 5.83%
C 7262 5948 32 32 0.44% 0.54%
D 7262 5948 2176 2176 29.96% 36.58%

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 0 13 11385 66.09 819 805 160.1
A 5 168 10253 59.02 819 805 160.1
A 13 254 9675 55.41 819 805 160.1
B 3 64 1200463 8471.3 772 756 141.6
B 0 189 428557 3020.76 772 756 141.6
B 15 32 18835 127.66 772 756 141.6
C 2 16 169485 959.33 767 775 175.9
C 14 238 126235 713.4 767 775 175.9
C 15 208 44225 247.07 767 775 175.9
D 1 52 4855507 29089.92 702 683 166.9
D 7 80 1442285 8638.02 702 683 166.9
D 12 233 592235 3544.56 702 683 166.9

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