ASTROSAT CZTI

Data Quality Report

Orbit 29832

Creation date: 2024-06-27T20:08:08.528396
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_291T01_9000004278_29832cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29832cztM0_level2_quad_clean.evt
Size (bytes)719,228,16063,720,000
Size685.9 MB 60.8 MB
Events in quadrant A3,364,674413,834
Events in quadrant B5,114,975408,522
Events in quadrant C3,304,683383,752
Events in quadrant D9,592,606303,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138611
B0188271
C0135491
D0326601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5998550.916972%
B59991111.850308%
C5999791.316886%
D5999210135.022504%

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 7353 5999 2 2 0.03% 0.03%
B 7354 6000 0 0 0.00% 0.00%
C 7354 6000 0 0 0.00% 0.00%
D 7354 6000 1920 1920 26.11% 32.00%

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 12 96 19102 108.11 867 855 168.8
A 13 254 11724 64.4 867 855 168.8
A 3 137 7458 39.12 867 855 168.8
B 6 159 1752643 11358.67 849 834 154.2
B 15 33 20129 125.11 849 834 154.2
B 12 111 17449 107.73 849 834 154.2
C 14 238 136355 741.29 802 808 182.9
C 3 233 23056 121.67 802 808 182.9
C 2 114 14272 73.63 802 808 182.9
D 7 80 6165208 37128.91 711 696 166.0
D 8 195 376073 2260.9 711 696 166.0
D 13 189 212817 1277.61 711 696 166.0

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