ASTROSAT CZTI

Data Quality Report

Orbit 09149

Creation date: 2024-06-27T15:41:57.611768
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/AS1C02_042T01_9000001278_09149cztM0_level2.evt modeM0/AS1C02_042T01_9000001278_09149cztM0_level2_quad_clean.evt
Size (bytes)389,658,24074,684,160
Size371.6 MB 71.2 MB
Events in quadrant A3,120,017462,457
Events in quadrant B2,842,345471,788
Events in quadrant C2,709,858460,159
Events in quadrant D2,718,913446,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130582
B0124097
C0123203
D0124401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6027791.310768%
B6024831.377822%
C6026380.630601%
D6027490.813008%

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 7177 6027 4 4 0.06% 0.07%
B 7177 6027 1 1 0.01% 0.02%
C 7177 6027 0 0 0.00% 0.00%
D 7177 6027 2 2 0.03% 0.03%

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 252075 1735.71 716 700 144.8
A 1 162 50090 341.03 716 700 144.8
A 15 174 27798 187.11 716 700 144.8
B 0 214 25880 185.37 721 703 135.8
B 12 111 14854 104.19 721 703 135.8
B 11 111 12040 83.47 721 703 135.8
C 13 61 5375 29.53 693 697 158.4
C 9 68 4276 22.6 693 697 158.4
C 8 222 2162 9.25 693 697 158.4
D 1 52 47260 269.29 690 671 173.0
D 12 233 22885 128.4 690 671 173.0
D 2 234 19804 110.59 690 671 173.0

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