ASTROSAT CZTI

Data Quality Report

Orbit 18580

Creation date: 2024-06-27T17:51:42.814078
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_075T07_9000002760_18580cztM0_level2.evt modeM0/AS1A05_075T07_9000002760_18580cztM0_level2_quad_clean.evt
Size (bytes)2,969,640,000474,410,880
Size2.8 GB 452.4 MB
Events in quadrant A19,030,9052,946,272
Events in quadrant B18,616,5683,033,748
Events in quadrant C21,020,6552,918,353
Events in quadrant D28,637,3482,792,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0824066
B0805156
C0878186
D01117076

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07900
B07900
C07900
D07900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A389937561.938810%
B389936121.569512%
C3899313373.428821%
D3899332988.457928%

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 41498 38995 168 168 0.40% 0.43%
B 41498 38996 7 7 0.02% 0.02%
C 41498 38996 429 429 1.03% 1.10%
D 41498 38997 2363 2363 5.69% 6.06%

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 13 543656 569.68 4692 4594 946.3
A 14 111 391391 408.76 4692 4594 946.3
A 13 254 62120 60.79 4692 4594 946.3
B 12 111 111305 117.94 4707 4573 905.0
B 11 111 96621 101.71 4707 4573 905.0
B 14 111 81565 85.08 4707 4573 905.0
C 9 54 2183324 2069.28 4508 4537 1052.9
C 14 238 695888 656.6 4508 4537 1052.9
C 4 254 546807 515.01 4508 4537 1052.9
D 7 238 5822579 5415.06 4442 4325 1074.5
D 1 52 5472745 5089.47 4442 4325 1074.5
D 10 50 271357 248.53 4442 4325 1074.5

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