ASTROSAT CZTI

Data Quality Report

Orbit 00875

Creation date: 2024-06-27T14:04:09.426857
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/AS1P01_889T01_9000000130_00875cztM0_level2.evt modeM0/AS1P01_889T01_9000000130_00875cztM0_level2_quad_clean.evt
Size (bytes)392,935,68028,388,160
Size374.7 MB 27.1 MB
Events in quadrant A2,273,258201,246
Events in quadrant B2,390,609199,555
Events in quadrant C5,031,375114,676
Events in quadrant D2,066,920195,124

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081830
B085680
C0166140
D076070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204100.000000%
B204120.097991%
C2041134565.899069%
D204120.097991%

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 2041 2041 13 13 0.64% 0.64%
B 2041 2041 20 20 0.98% 0.98%
C 2041 2041 1379 1379 67.56% 67.56%
D 2041 2041 9 9 0.44% 0.44%

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 10 133 3091 17.36 592 599 143.5
A 11 79 2831 15.55 592 599 143.5
A 3 111 1713 7.76 592 599 143.5
B 0 245 10380 65.72 621 624 148.4
B 5 249 6910 42.35 621 624 148.4
B 7 221 5095 30.12 621 624 148.4
C 9 83 3567723 34639.56 362 375 103.0
C 1 192 33017 316.96 362 375 103.0
C 3 111 6193 56.49 362 375 103.0
D 1 4 66591 396.76 523 542 166.5
D 2 16 11787 67.55 523 542 166.5
D 2 63 7118 39.5 523 542 166.5

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