ASTROSAT CZTI

Data Quality Report

Orbit 25046

Creation date: 2024-06-27T19:13:10.859667
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_206T01_9000003672_25046cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25046cztM0_level2_quad_clean.evt
Size (bytes)1,357,747,200222,773,760
Size1.3 GB 212.5 MB
Events in quadrant A8,842,3881,423,951
Events in quadrant B8,812,3921,447,855
Events in quadrant C8,834,6481,374,988
Events in quadrant D13,449,3271,294,803

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03540
B03540
C03540
D03540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371783
B0369173
C0367393
D0519623

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174905293.024585%
B174905713.264723%
C174905683.247570%
D174908494.854202%

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 18785 17493 34 34 0.18% 0.19%
B 18785 17492 10 10 0.05% 0.06%
C 18785 17493 0 0 0.00% 0.00%
D 18785 17494 379 379 2.02% 2.17%

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 11 208 218921 493.18 2189 2137 439.6
A 15 174 182529 410.39 2189 2137 439.6
A 13 254 28361 59.66 2189 2137 439.6
B 4 80 98343 231.66 2176 2123 415.4
B 12 111 51083 117.87 2176 2123 415.4
B 11 111 46030 105.71 2176 2123 415.4
C 14 238 328700 668.48 2090 2106 488.6
C 7 247 234704 476.08 2090 2106 488.6
C 2 16 61553 121.68 2090 2106 488.6
D 8 195 3240852 6328.74 2096 2033 511.8
D 9 35 1492999 2913.39 2096 2033 511.8
D 12 233 228253 442.04 2096 2033 511.8

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