ASTROSAT CZTI

Data Quality Report

Orbit 19751

Creation date: 2024-06-27T18:06:31.483843
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/AS1C04_001T01_9000002948_19751cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19751cztM0_level2_quad_clean.evt
Size (bytes)1,771,087,680401,336,640
Size1.6 GB 382.7 MB
Events in quadrant A10,864,8842,684,157
Events in quadrant B12,064,9402,713,964
Events in quadrant C12,956,1942,605,114
Events in quadrant D16,139,7042,510,649

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04800
B04800
C04800
D04800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0485894
B0517194
C0533494
D0645214

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A238793981.666736%
B238805572.332496%
C238796092.550358%
D2387913515.657691%

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 25439 23881 0 0 0.00% 0.00%
B 25440 23882 115 115 0.45% 0.48%
C 25439 23882 77 77 0.30% 0.32%
D 25439 23882 947 947 3.72% 3.97%

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 12 16 48984 83.27 2774 2715 555.6
A 11 29 37994 63.49 2774 2715 555.6
A 0 23 32192 53.05 2774 2715 555.6
B 7 220 564329 1068.54 2770 2688 525.6
B 3 64 305071 575.29 2770 2688 525.6
B 4 216 135764 253.18 2770 2688 525.6
C 3 233 2060647 3334.43 2665 2675 617.2
C 14 238 414719 667.61 2665 2675 617.2
C 7 247 64863 100.76 2665 2675 617.2
D 1 52 3910736 6041.16 2656 2572 646.9
D 7 38 585785 901.52 2656 2572 646.9
D 9 1 546609 840.96 2656 2572 646.9

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