ASTROSAT CZTI

Data Quality Report

Orbit 20702

Creation date: 2024-06-27T18:18:35.241229
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/AS1A05_165T07_9000003062_20702cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20702cztM0_level2_quad_clean.evt
Size (bytes)338,558,40070,001,280
Size322.9 MB 66.8 MB
Events in quadrant A2,129,428469,721
Events in quadrant B2,270,062465,319
Events in quadrant C2,075,041446,037
Events in quadrant D3,473,001423,524

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012135
B012030
C012129
D012234

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123223100
B0128023192
C0121943033
D0170853746

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062
B073
C062
D051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4484140.312221%
B4480471.049107%
C4511160.354689%
D44532214.962946%

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 7261 4665 4 4 0.06% 0.09%
B 7253 4654 22 22 0.30% 0.47%
C 7226 4684 0 0 0.00% 0.00%
D 7234 4641 195 195 2.70% 4.20%

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 16 43808 390.47 539 529 110.8
A 9 143 13144 113.82 539 529 110.8
A 0 226 4569 36.45 539 529 110.8
B 7 220 83480 810.98 531 518 102.3
B 0 190 34641 333.56 531 518 102.3
B 5 172 27395 262.73 531 518 102.3
C 14 238 78911 656.31 508 512 119.5
C 3 233 10332 82.21 508 512 119.5
C 7 247 3620 26.02 508 512 119.5
D 12 227 566099 4611.11 503 489 122.7
D 5 222 541166 4407.84 503 489 122.7
D 13 153 357431 2909.95 503 489 122.7

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