ASTROSAT CZTI

Data Quality Report

Orbit 14091

Creation date: 2024-06-27T16:50:14.368017
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/AS1G08_022T01_9000002078_14091cztM0_level2.evt modeM0/AS1G08_022T01_9000002078_14091cztM0_level2_quad_clean.evt
Size (bytes)2,433,084,480335,180,160
Size2.3 GB 319.7 MB
Events in quadrant A12,477,1212,231,536
Events in quadrant B20,725,2432,056,355
Events in quadrant C12,105,8512,140,354
Events in quadrant D26,655,8761,961,429

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05200
B05200
C05200
D05200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0539306
B0786205
C0527615
D0969075

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A256112050.800437%
B25611289111.288118%
C256111690.659873%
D25611282311.022607%

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 27662 25618 45 45 0.16% 0.18%
B 27662 25614 1729 1729 6.25% 6.75%
C 27662 25618 25 25 0.09% 0.10%
D 27662 25618 2407 2407 8.70% 9.40%

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 9 143 317066 509.32 3059 2984 616.7
A 12 189 298827 479.74 3059 2984 616.7
A 15 222 43499 65.7 3059 2984 616.7
B 10 16 8507585 15577.9 2896 2816 546.0
B 0 189 299960 544.27 2896 2816 546.0
B 0 85 207614 375.12 2896 2816 546.0
C 3 233 291264 419.94 2969 2984 686.5
C 0 207 198077 284.19 2969 2984 686.5
C 13 61 21506 26.98 2969 2984 686.5
D 1 52 14088392 19814.78 2844 2773 710.9
D 8 195 650020 910.51 2844 2773 710.9
D 7 80 271229 377.65 2844 2773 710.9

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