ASTROSAT CZTI

Data Quality Report

Orbit 21397

Creation date: 2024-06-27T18:27:19.809639
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/AS1C04_010T01_9000003158_21397cztM0_level2.evt modeM0/AS1C04_010T01_9000003158_21397cztM0_level2_quad_clean.evt
Size (bytes)170,743,68019,347,840
Size162.8 MB 18.5 MB
Events in quadrant A872,400119,285
Events in quadrant B846,083120,481
Events in quadrant C1,219,692113,266
Events in quadrant D2,111,975104,056

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035780
B035700
C047460
D074660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175020.114286%
B175110.057110%
C1751281.599086%
D175128015.990862%

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 1750 1750 0 0 0.00% 0.00%
B 1751 1751 0 0 0.00% 0.00%
C 1751 1751 1 1 0.06% 0.06%
D 1751 1751 248 248 14.16% 14.16%

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 5 168 32407 738.13 211 206 43.6
A 11 47 23844 541.85 211 206 43.6
A 13 254 3377 72.69 211 206 43.6
B 0 245 8294 187.2 211 206 43.2
B 0 190 5931 132.5 211 206 43.2
B 12 111 4676 103.46 211 206 43.2
C 3 233 367882 7395.47 204 205 49.7
C 14 238 32470 648.98 204 205 49.7
C 10 91 23982 478.25 204 205 49.7
D 13 174 581220 11574.31 196 190 50.2
D 1 20 342781 6824.53 196 190 50.2
D 12 235 298903 5950.46 196 190 50.2

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