ASTROSAT CZTI

Data Quality Report

Orbit 37760

Creation date: 2024-06-27T21:44:04.850646
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/AS1A11_106T02_9000005344_37760cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37760cztM0_level2_quad_clean.evt
Size (bytes)827,150,400145,307,520
Size788.8 MB 138.6 MB
Events in quadrant A5,898,240910,836
Events in quadrant B5,786,893917,796
Events in quadrant C5,243,613934,511
Events in quadrant D7,378,446877,458

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246844
B0248243
C0227023
D0296683

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A109871371.246928%
B109871941.765723%
C10987340.309457%
D109875284.805679%

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 15046 10990 114 114 0.76% 1.04%
B 15046 10990 161 161 1.07% 1.46%
C 15046 10990 26 26 0.17% 0.24%
D 15046 10990 510 510 3.39% 4.64%

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 611439 2515.06 1205 1181 242.6
A 9 143 549604 2260.22 1205 1181 242.6
A 12 189 30627 121.36 1205 1181 242.6
B 5 255 482023 2122.24 1193 1163 226.6
B 5 172 190790 836.9 1193 1163 226.6
B 4 81 98577 429.93 1193 1163 226.6
C 15 214 465317 1701.78 1178 1184 272.7
C 0 10 130421 473.86 1178 1184 272.7
C 3 233 22084 76.63 1178 1184 272.7
D 2 249 796509 2843.48 1152 1118 279.7
D 2 250 668292 2385.11 1152 1118 279.7
D 7 223 488709 1743.11 1152 1118 279.7

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