ASTROSAT CZTI

Data Quality Report

Orbit 31721

Creation date: 2024-06-27T20:31:56.064658
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/AS1T04_034T01_9000004632_31721cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31721cztM0_level2_quad_clean.evt
Size (bytes)327,355,20052,179,840
Size312.2 MB 49.8 MB
Events in quadrant A2,008,013344,346
Events in quadrant B3,300,176305,606
Events in quadrant C2,056,102333,779
Events in quadrant D2,296,964334,352

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C062
D073

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011636
B011534
C012040
D011636

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123054023
B0190216903
C0129124513
D0143255044

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3794691.818661%
B354537510.578279%
C37271293.461229%
D3666371.009274%

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 5971 4204 12 12 0.20% 0.29%
B 5962 3918 116 116 1.95% 2.96%
C 5990 4137 23 23 0.38% 0.56%
D 5993 4111 8 8 0.13% 0.19%

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 188047 1918.6 471 460 97.8
A 13 254 7238 69.32 471 460 97.8
A 3 137 4997 46.4 471 460 97.8
B 6 159 911581 11157.86 411 399 81.7
B 4 80 710400 8694.3 411 399 81.7
B 15 33 26003 313.53 411 399 81.7
C 0 10 148519 1382.19 446 448 107.1
C 14 238 70783 656.55 446 448 107.1
C 10 22 50235 464.74 446 448 107.1
D 8 195 513804 4808.39 444 430 106.8
D 12 233 85302 794.93 444 430 106.8
D 2 234 15156 137.93 444 430 106.8

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