ASTROSAT CZTI

Data Quality Report

Orbit 21391

Creation date: 2024-06-27T18:27:13.112375
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_9000003156_21391cztM0_level2.evt modeM0/AS1C04_001T01_9000003156_21391cztM0_level2_quad_clean.evt
Size (bytes)2,323,814,400448,361,280
Size2.2 GB 427.6 MB
Events in quadrant A15,523,0882,945,686
Events in quadrant B14,713,4982,991,043
Events in quadrant C22,429,8682,751,110
Events in quadrant D15,677,9732,820,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0658355
B0638465
C0873979
D0677865

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06100
B06100
C06100
D06100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A301383961.313956%
B301392570.852716%
C3013822097.329617%
D301383981.320592%

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 40737 30142 313 313 0.77% 1.04%
B 40738 30143 120 120 0.29% 0.40%
C 40738 30139 1128 1128 2.77% 3.74%
D 40738 30143 328 328 0.81% 1.09%

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 5 16 1125885 1620.26 3503 3429 692.8
A 5 168 442506 633.81 3503 3429 692.8
A 12 96 254251 362.06 3503 3429 692.8
B 5 172 297174 448.82 3500 3410 654.5
B 0 230 163092 243.97 3500 3410 654.5
B 3 64 117052 173.63 3500 3410 654.5
C 3 233 8957127 11758.8 3290 3306 761.5
C 14 238 517707 675.55 3290 3306 761.5
C 10 91 81589 102.81 3290 3306 761.5
D 1 52 648829 785.69 3410 3312 821.6
D 12 235 638748 773.42 3410 3312 821.6
D 13 153 385545 465.23 3410 3312 821.6

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