ASTROSAT CZTI

Data Quality Report

Orbit 23414

Creation date: 2024-06-27T18:54:03.867316
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/AS1A07_127T02_9000003460_23414cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23414cztM0_level2_quad_clean.evt
Size (bytes)737,383,680119,977,920
Size703.2 MB 114.4 MB
Events in quadrant A4,753,805748,503
Events in quadrant B5,059,251755,820
Events in quadrant C5,075,413726,603
Events in quadrant D6,771,094714,487

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203462
B0211642
C0212052
D0269254

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9930840.845921%
B99311141.147921%
C99311681.691673%
D99301171.178248%

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 11496 9931 7 7 0.06% 0.07%
B 11497 9932 13 13 0.11% 0.13%
C 11497 9931 50 50 0.43% 0.50%
D 11496 9931 43 43 0.37% 0.43%

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 10 253 25585 98.81 1224 1200 246.8
A 13 254 15231 56.85 1224 1200 246.8
A 3 137 10906 39.33 1224 1200 246.8
B 0 189 196689 830.41 1214 1183 235.4
B 0 190 50609 209.94 1214 1183 235.4
B 12 111 28907 117.76 1214 1183 235.4
C 10 9 353499 1288.8 1164 1171 273.4
C 14 238 184222 669.59 1164 1171 273.4
C 13 61 8021 25.06 1164 1171 273.4
D 7 238 1534726 5314.89 1187 1154 288.5
D 1 52 644024 2227.99 1187 1154 288.5
D 2 234 45079 152.23 1187 1154 288.5

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