ASTROSAT CZTI

Data Quality Report

Orbit 26317

Creation date: 2024-06-27T19:27:24.087241
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_008T02_9000003796_26317cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26317cztM0_level2_quad_clean.evt
Size (bytes)466,850,880111,859,200
Size445.2 MB 106.7 MB
Events in quadrant A3,096,139732,523
Events in quadrant B3,200,581755,675
Events in quadrant C3,801,305733,516
Events in quadrant D3,602,000715,949

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132340
B0134500
C0151660
D0148810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6452230.356479%
B6452400.619963%
C64521622.510849%
D64521281.983881%

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 7582 6451 0 0 0.00% 0.00%
B 7582 6453 0 0 0.00% 0.00%
C 7582 6451 35 35 0.46% 0.54%
D 7582 6453 83 83 1.09% 1.29%

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 13 254 10998 63.53 802 785 160.8
A 3 137 7352 40.85 802 785 160.8
A 0 226 6723 36.94 802 785 160.8
B 12 16 33349 218.16 804 785 149.3
B 12 111 17876 114.5 804 785 149.3
B 11 111 16396 104.58 804 785 149.3
C 3 233 359900 1961.78 792 798 183.0
C 4 254 171428 932.15 792 798 183.0
C 14 238 127710 693.32 792 798 183.0
D 1 52 346724 1845.5 792 772 187.5
D 11 176 132366 701.99 792 772 187.5
D 12 233 84827 448.4 792 772 187.5

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