ASTROSAT CZTI

Data Quality Report

Orbit 13425

Creation date: 2024-06-27T16:40:36.292740
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/AS1A04_103T01_9000001988_13425cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13425cztM0_level2_quad_clean.evt
Size (bytes)928,851,840160,081,920
Size885.8 MB 152.7 MB
Events in quadrant A5,655,5631,016,040
Events in quadrant B5,812,4311,038,421
Events in quadrant C5,745,3201,006,134
Events in quadrant D10,068,446920,688

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254193
B0255642
C0255112
D0384212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125301230.981644%
B125301431.141261%
C125301160.925778%
D12530133910.686353%

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 13611 12531 1 1 0.01% 0.01%
B 13611 12531 0 0 0.00% 0.00%
C 13611 12531 1 1 0.01% 0.01%
D 13611 12531 1264 1264 9.29% 10.09%

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 1 162 23316 73.38 1461 1427 298.3
A 0 226 12984 38.74 1461 1427 298.3
A 12 194 11151 32.6 1461 1427 298.3
B 0 230 36448 124.9 1467 1429 280.4
B 4 142 35594 121.85 1467 1429 280.4
B 12 111 33722 115.17 1467 1429 280.4
C 3 233 110210 329.05 1430 1434 330.6
C 14 220 33253 96.25 1430 1434 330.6
C 14 234 23521 66.81 1430 1434 330.6
D 1 52 3525442 10795.13 1355 1319 326.5
D 13 249 912890 2792.33 1355 1319 326.5
D 8 195 435960 1331.4 1355 1319 326.5

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