ASTROSAT CZTI

Data Quality Report

Orbit 02824

Creation date: 2024-06-27T14:22:06.976020
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/AS1P01_999T99_9000000410_02824cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02824cztM0_level2_quad_clean.evt
Size (bytes)1,684,728,00055,465,920
Size1.6 GB 52.9 MB
Events in quadrant A8,421,268355,410
Events in quadrant B11,997,300339,435
Events in quadrant C12,777,090316,715
Events in quadrant D17,431,194242,200

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293062
B0400171
C0424381
D0567851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6069360.593178%
B6069100316.526611%
C6069150224.748723%
D6069445073.323447%

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 7244 6070 504 504 6.96% 8.30%
B 7244 6070 2411 2411 33.28% 39.72%
C 7244 6067 2894 2894 39.95% 47.70%
D 7244 6070 5555 5555 76.68% 91.52%

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 0 13 207327 427.92 2084 2068 479.7
A 0 31 46881 93.42 2084 2068 479.7
A 0 128 41871 82.98 2084 2068 479.7
B 0 191 836917 1706.65 2107 2081 489.2
B 0 219 534627 1088.68 2107 2081 489.2
B 0 228 507655 1033.54 2107 2081 489.2
C 0 219 2332553 4354.27 1823 1879 535.3
C 1 16 1448322 2702.31 1823 1879 535.3
C 1 192 674402 1256.44 1823 1879 535.3
D 0 226 6575317 16022.73 1368 1381 410.3
D 1 31 4233630 10315.31 1368 1381 410.3
D 1 66 349870 849.38 1368 1381 410.3

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
Veto Counter