ASTROSAT CZTI

Data Quality Report

Orbit 11693

Creation date: 2024-06-27T16:16:59.759039
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/AS1A04_227T01_9000001724_11693cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11693cztM0_level2_quad_clean.evt
Size (bytes)496,077,12074,848,320
Size473.1 MB 71.4 MB
Events in quadrant A3,772,278460,567
Events in quadrant B4,154,244450,819
Events in quadrant C3,097,320466,788
Events in quadrant D3,564,243440,289

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152053
B0164502
C0131992
D0146002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6413681.060346%
B64133585.582411%
C6413100.155933%
D6413540.842040%

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 7664 6415 15 15 0.20% 0.23%
B 7664 6414 185 185 2.41% 2.88%
C 7664 6415 0 0 0.00% 0.00%
D 7664 6415 34 34 0.44% 0.53%

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 5 401817 2482.23 803 788 161.6
A 1 162 107616 661.23 803 788 161.6
A 1 178 57463 350.8 803 788 161.6
B 4 239 463247 3087.22 795 778 149.8
B 3 64 402183 2679.59 795 778 149.8
B 0 219 84005 555.58 795 778 149.8
C 8 128 10579 53.9 789 796 181.5
C 8 112 5789 27.51 789 796 181.5
C 13 61 5728 27.17 789 796 181.5
D 7 80 175618 937.84 775 755 186.5
D 8 195 117290 625.01 775 755 186.5
D 13 104 93932 499.73 775 755 186.5

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