ASTROSAT CZTI

Data Quality Report

Orbit 25636

Creation date: 2024-06-27T19:19:48.606882
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/AS1A09_013T02_9000003734_25636cztM0_level2.evt modeM0/AS1A09_013T02_9000003734_25636cztM0_level2_quad_clean.evt
Size (bytes)461,940,480102,156,480
Size440.5 MB 97.4 MB
Events in quadrant A3,315,036676,509
Events in quadrant B3,307,447689,474
Events in quadrant C3,215,852648,778
Events in quadrant D3,709,092624,877

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136310
B0137680
C0135920
D0152120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6514210.322383%
B6513640.982650%
C6513550.844465%
D65141372.103162%

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 7819 6515 0 0 0.00% 0.00%
B 7819 6515 10 10 0.13% 0.15%
C 7819 6515 0 0 0.00% 0.00%
D 7819 6515 121 121 1.55% 1.86%

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 8 192 155415 959.71 820 804 161.1
A 13 254 9793 55.8 820 804 161.1
A 3 137 7231 39.89 820 804 161.1
B 3 64 81948 532.27 822 802 152.5
B 12 111 18348 115.09 822 802 152.5
B 11 111 16360 102.05 822 802 152.5
C 14 238 128427 702.82 784 790 181.6
C 3 233 33738 181.43 784 790 181.6
C 13 61 5355 25.14 784 790 181.6
D 1 52 506727 2483.49 769 753 203.7
D 8 195 217774 1065.21 769 753 203.7
D 13 104 31964 153.19 769 753 203.7

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