ASTROSAT CZTI

Data Quality Report

Orbit 25049

Creation date: 2024-06-27T19:13:12.726220
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_206T01_9000003672_25049cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25049cztM0_level2_quad_clean.evt
Size (bytes)1,019,603,520164,652,480
Size972.4 MB 157.0 MB
Events in quadrant A5,834,6301,078,059
Events in quadrant B6,058,4701,087,654
Events in quadrant C6,058,0161,032,376
Events in quadrant D12,109,064949,975

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249252
B0256072
C0255632
D0446132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12128890.733839%
B121281251.030673%
C121281781.467678%
D121289948.195910%

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 13338 12130 3 3 0.02% 0.02%
B 13338 12129 15 15 0.11% 0.12%
C 13338 12129 33 33 0.25% 0.27%
D 13338 12130 813 813 6.10% 6.70%

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 17 82044 269.76 1465 1431 298.8
A 11 208 74012 242.88 1465 1431 298.8
A 13 254 21437 66.95 1465 1431 298.8
B 10 251 111108 394.78 1455 1417 277.9
B 5 172 78235 276.47 1455 1417 277.9
B 0 190 71547 252.4 1455 1417 277.9
C 2 16 311022 939.11 1398 1406 329.7
C 14 238 220229 663.72 1398 1406 329.7
C 7 247 31259 90.55 1398 1406 329.7
D 8 195 3430074 10192.67 1378 1338 336.4
D 12 233 1892503 5621.9 1378 1338 336.4
D 7 238 1010807 3000.87 1378 1338 336.4

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