ASTROSAT CZTI

Data Quality Report

Orbit 44928

Creation date: 2024-06-27T23:08:06.318578
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/AS1A13_017T02_9000006032_44928cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44928cztM0_level2_quad_clean.evt
Size (bytes)642,830,400130,544,640
Size613.1 MB 124.5 MB
Events in quadrant A6,534,448882,086
Events in quadrant B4,687,501900,899
Events in quadrant C3,861,559885,076
Events in quadrant D8,081,534718,940

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255241
B0194791
C0172211
D0297045

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81382232.740231%
B81392593.182209%
C8139670.823197%
D8138109713.479971%

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 8188 8139 15 15 0.18% 0.18%
B 8189 8140 55 55 0.67% 0.68%
C 8189 8140 6 6 0.07% 0.07%
D 8189 8140 757 757 9.24% 9.30%

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 83 2705853 13636.8 951 928 198.4
A 7 191 28480 138.9 951 928 198.4
A 9 254 26782 130.34 951 928 198.4
B 4 171 244228 1304.17 948 920 186.6
B 0 183 141686 754.53 948 920 186.6
B 10 3 107625 571.96 948 920 186.6
C 3 233 60934 269.57 941 947 222.5
C 14 254 39076 171.34 941 947 222.5
C 12 250 35353 154.61 941 947 222.5
D 1 52 1500087 6676.09 887 858 224.6
D 13 187 714739 3178.92 887 858 224.6
D 13 249 600170 2668.74 887 858 224.6

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