ASTROSAT CZTI

Data Quality Report

Orbit 16621

Creation date: 2024-06-27T17:25:14.544958
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_064T01_9000002450_16621cztM0_level2.evt modeM0/AS1A05_064T01_9000002450_16621cztM0_level2_quad_clean.evt
Size (bytes)604,627,200145,051,200
Size576.6 MB 138.3 MB
Events in quadrant A4,710,795951,587
Events in quadrant B4,027,750991,159
Events in quadrant C4,457,049956,352
Events in quadrant D4,575,766940,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198913
B0174282
C0186152
D0191502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79604345.452261%
B79601892.374372%
C79602423.040201%
D7960770.967337%

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 8431 7963 235 235 2.79% 2.95%
B 8431 7963 5 5 0.06% 0.06%
C 8431 7963 0 0 0.00% 0.00%
D 8431 7963 21 21 0.25% 0.26%

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 15 174 1089761 5825.12 921 898 186.9
A 13 248 62114 327.49 921 898 186.9
A 3 1 11089 54.52 921 898 186.9
B 7 220 61724 334.87 948 922 181.6
B 15 35 57439 311.27 948 922 181.6
B 0 189 42288 227.83 948 922 181.6
C 3 233 664452 3129.97 907 914 212.0
C 14 238 138611 649.53 907 914 212.0
C 7 247 102457 478.99 907 914 212.0
D 1 52 817946 3638.24 918 888 224.6
D 7 38 160479 710.63 918 888 224.6
D 10 70 71822 315.86 918 888 224.6

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