ASTROSAT CZTI

Data Quality Report

Orbit 20200922_C05_019T03_9000003898_level2

Creation date: 2025-12-15T06:58:43.657358
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/AS1C05_019T03_9000003898cztM0_level2.fits modeM0/AS1C05_019T03_9000003898cztM0_level2_quad_clean.evt
Size (bytes)782,072,640989,599,680
Size745.8 MB 943.8 MB
Events in quadrant A3,797,2664,540,215
Events in quadrant B4,599,2006,287,620
Events in quadrant C5,014,5126,975,244
Events in quadrant D4,337,2286,256,528

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04061380
B03029300
C01809110
D02332490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017640
B017640
C017640
D017640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A861933611741.902475%
B861881595218.508377%
C8622814471.678109%
D8621943054.993099%

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 99083 85731 0 0 0.00% 0.00%
B 99083 86156 0 0 0.00% 0.00%
C 99083 86252 0 0 0.00% 0.00%
D 99083 86204 0 0 0.00% 0.00%

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 0 29 3221 9.49 990 934 241.0
A 7 110 3084 8.92 990 934 241.0
A 0 30 2876 8.06 990 934 241.0
B 2 9 3657 10.48 1216 1164 237.8
B 5 128 3152 8.36 1216 1164 237.8
B 5 255 3082 8.06 1216 1164 237.8
C 12 241 3601 7.04 1327 1247 334.2
C 9 209 3394 6.42 1327 1247 334.2
C 3 126 3368 6.35 1327 1247 334.2
D 4 246 3451 7.06 1236 1128 329.2
D 3 14 3196 6.28 1236 1128 329.2
D 10 189 3140 6.11 1236 1128 329.2

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