ASTROSAT CZTI

Data Quality Report

Orbit 17555

Creation date: 2024-06-27T17:37:54.393572
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/AS1T03_066T01_9000002600_17555cztM0_level2.evt modeM0/AS1T03_066T01_9000002600_17555cztM0_level2_quad_clean.evt
Size (bytes)2,007,250,560351,797,760
Size1.9 GB 335.5 MB
Events in quadrant A14,609,9532,267,860
Events in quadrant B16,037,1162,192,181
Events in quadrant C14,855,7832,212,232
Events in quadrant D13,508,4282,171,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05360
B05360
C05360
D05360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0615805
B0651315
C0613425
D0588625

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A263426472.456154%
B2634216336.199226%
C263429553.625389%
D263424341.647559%

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 44640 26347 331 331 0.74% 1.26%
B 44641 26347 1139 1139 2.55% 4.32%
C 44641 26344 384 384 0.86% 1.46%
D 44641 26347 211 211 0.47% 0.80%

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 14 237 2435692 3926.81 3091 3027 619.5
A 15 174 293372 468.68 3091 3027 619.5
A 0 226 26873 38.49 3091 3027 619.5
B 10 245 4056276 7163.83 3007 2926 565.8
B 6 36 101678 174.53 3007 2926 565.8
B 12 111 69370 117.43 3007 2926 565.8
C 0 79 1734510 2535.3 2949 2975 683.0
C 3 233 940506 1372.73 2949 2975 683.0
C 14 238 454752 661.49 2949 2975 683.0
D 13 189 845784 1155.29 3002 2923 729.6
D 5 222 749551 1023.38 3002 2923 729.6
D 10 70 141585 190.06 3002 2923 729.6

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