ASTROSAT CZTI

Data Quality Report

Orbit 23893

Creation date: 2024-06-27T18:59:49.893244
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/AS1A07_142T01_9000003540_23893cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23893cztM0_level2_quad_clean.evt
Size (bytes)1,785,908,160315,743,040
Size1.7 GB 301.1 MB
Events in quadrant A11,506,4012,026,504
Events in quadrant B12,103,9552,055,652
Events in quadrant C11,759,2701,973,656
Events in quadrant D17,072,9781,832,356

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0497155
B0512345
C0500225
D0668065

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04960
B04960
C04960
D04960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243341720.706830%
B243352711.113622%
C243353791.557428%
D2433517707.273474%

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 26698 24335 0 0 0.00% 0.00%
B 26700 24338 26 26 0.10% 0.11%
C 26700 24339 14 14 0.05% 0.06%
D 26700 24339 1217 1217 4.56% 5.00%

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 13 254 41435 64.38 2978 2910 598.4
A 3 137 26490 39.4 2978 2910 598.4
A 0 226 25841 38.32 2978 2910 598.4
B 15 33 151103 264.29 2962 2888 560.8
B 0 197 111454 193.59 2962 2888 560.8
B 0 189 81406 140.01 2962 2888 560.8
C 14 238 447917 664.62 2865 2881 669.6
C 0 10 137295 200.73 2865 2881 669.6
C 7 247 22991 30.03 2865 2881 669.6
D 12 218 3844913 5633.67 2819 2738 682.0
D 8 195 1045356 1528.76 2819 2738 682.0
D 12 250 501947 731.98 2819 2738 682.0

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