ASTROSAT CZTI

Data Quality Report

Orbit 32997

Creation date: 2024-06-27T20:44:23.309970
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_080T01_9000004756_32997cztM0_level2.evt modeM0/AS1A11_080T01_9000004756_32997cztM0_level2_quad_clean.evt
Size (bytes)1,132,384,320174,467,520
Size1.1 GB 166.4 MB
Events in quadrant A5,227,9221,193,228
Events in quadrant B7,478,0931,153,049
Events in quadrant C5,583,8321,171,096
Events in quadrant D15,247,446988,551

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226153
B0292263
C0238313
D0531593

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1123380.071219%
B112337126.338467%
C112331361.210718%
D11233245621.864150%

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 15172 11236 0 0 0.00% 0.00%
B 15172 11236 527 527 3.47% 4.69%
C 15172 11236 66 66 0.44% 0.59%
D 15172 11236 2443 2443 16.10% 21.74%

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 15 47 37307 135.33 1327 1303 266.1
A 9 143 30484 109.68 1327 1303 266.1
A 13 254 21016 74.09 1327 1303 266.1
B 5 172 2171174 8821.48 1289 1258 246.0
B 0 219 118071 474.89 1289 1258 246.0
B 15 85 36402 142.87 1289 1258 246.0
C 0 10 377687 1268.96 1277 1293 296.6
C 3 233 73404 243.11 1277 1293 296.6
C 1 241 39489 128.77 1277 1293 296.6
D 8 230 2659010 8556.69 1187 1169 310.6
D 7 223 1913687 6157.19 1187 1169 310.6
D 8 195 1626753 5233.43 1187 1169 310.6

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