ASTROSAT CZTI

Data Quality Report

Orbit 07324

Creation date: 2024-06-27T15:18:40.316615
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/AS1G06_164T01_9000001004_07324cztM0_level2.evt modeM0/AS1G06_164T01_9000001004_07324cztM0_level2_quad_clean.evt
Size (bytes)1,560,467,520334,082,880
Size1.5 GB 318.6 MB
Events in quadrant A11,627,3982,150,146
Events in quadrant B11,337,6872,162,046
Events in quadrant C10,445,8552,128,595
Events in quadrant D12,231,0472,033,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0513384
B0498854
C0485814
D0533844

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239016912.891092%
B239015192.171457%
C239013131.309569%
D239014511.886950%

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 25306 23902 108 108 0.43% 0.45%
B 25306 23903 18 18 0.07% 0.08%
C 25306 23903 0 0 0.00% 0.00%
D 25306 23903 73 73 0.29% 0.31%

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 8 15 606323 1112.04 2698 2635 542.9
A 15 234 452948 829.51 2698 2635 542.9
A 13 248 84138 150.13 2698 2635 542.9
B 11 51 318791 614.59 2729 2661 514.4
B 0 214 299929 577.92 2729 2661 514.4
B 4 81 83162 156.5 2729 2661 514.4
C 9 68 80231 127.26 2649 2651 609.6
C 13 61 20355 29.04 2649 2651 609.6
C 8 128 14655 19.69 2649 2651 609.6
D 1 20 1166207 1836.86 2622 2535 633.5
D 2 216 706544 1111.28 2622 2535 633.5
D 12 233 148651 230.64 2622 2535 633.5

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