ASTROSAT CZTI

Data Quality Report

Orbit 26877

Creation date: 2024-06-27T19:33:57.409199
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/AS1T03_224T01_9000003872_26877cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26877cztM0_level2_quad_clean.evt
Size (bytes)636,739,20087,886,080
Size607.2 MB 83.8 MB
Events in quadrant A3,708,950596,502
Events in quadrant B4,665,136609,126
Events in quadrant C3,167,629593,225
Events in quadrant D7,311,518418,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149090
B0180260
C0132730
D0260750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365600.942655%
B63652934.603299%
C6365570.895522%
D6365170426.771406%

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 7555 6366 34 34 0.45% 0.53%
B 7555 6365 159 159 2.10% 2.50%
C 7555 6366 0 0 0.00% 0.00%
D 7555 6365 1185 1185 15.68% 18.62%

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 615938 3819.52 802 788 161.1
A 13 254 10447 59.97 802 788 161.1
A 3 137 7351 40.75 802 788 161.1
B 0 189 554415 3640.39 801 783 152.1
B 3 112 510836 3353.84 801 783 152.1
B 3 64 219561 1438.57 801 783 152.1
C 14 238 124495 682.59 775 781 181.2
C 2 16 11272 57.88 775 781 181.2
C 13 61 5283 24.84 775 781 181.2
D 7 80 4258806 29372.92 619 606 145.0
D 1 52 388996 2679.1 619 606 145.0
D 2 250 155674 1069.65 619 606 145.0

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