ASTROSAT CZTI

Data Quality Report

Orbit 36183

Creation date: 2022-06-08T06:01:43.321608
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/AS1A10_071T50_9000005166_36183cztM0_level2.evt modeM0/AS1A10_071T50_9000005166_36183cztM0_level2_quad_clean.evt
Size (bytes)660,481,92070,914,240
Size629.9 MB 67.6 MB
Events in quadrant A2,711,884474,492
Events in quadrant B3,191,168469,862
Events in quadrant C9,792,791377,939
Events in quadrant D3,925,048429,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117563
B0131812
C0329802
D0153372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5644120.212615%
B56441352.391921%
C5644257945.694543%
D56443315.864635%

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 7227 5645 0 0 0.00% 0.00%
B 7227 5645 83 83 1.15% 1.47%
C 7227 5644 2193 2193 30.34% 38.86%
D 7227 5645 299 299 4.14% 5.30%

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 10 83 184767 1396.32 648 636 131.9
A 13 254 9946 70.6 648 636 131.9
A 13 6 9597 67.95 648 636 131.9
B 5 172 335329 2729.16 637 619 122.6
B 5 236 234717 1908.79 637 619 122.6
B 15 85 35248 282.36 637 619 122.6
C 4 254 6695699 57132.72 503 507 117.2
C 15 208 405359 3454.76 503 507 117.2
C 0 207 356831 3040.65 503 507 117.2
D 13 249 766414 5031.16 614 595 152.2
D 2 250 242993 1592.47 614 595 152.2
D 12 235 222482 1457.72 614 595 152.2

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