ASTROSAT CZTI

Data Quality Report

Orbit 16180

Creation date: 2024-06-27T17:19:00.762416
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/AS1T02_109T01_9000002386_16180cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16180cztM0_level2_quad_clean.evt
Size (bytes)1,744,358,400327,335,040
Size1.6 GB 312.2 MB
Events in quadrant A12,824,8952,061,060
Events in quadrant B12,570,7872,110,485
Events in quadrant C12,412,3602,016,885
Events in quadrant D13,298,5481,973,690

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0551896
B0540675
C0534885
D0574766

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05200
B05200
C05200
D05200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A254693741.468452%
B254692330.914838%
C254692310.906985%
D254684901.923983%

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 38465 25475 136 136 0.35% 0.53%
B 38465 25475 38 38 0.10% 0.15%
C 38465 25475 0 0 0.00% 0.00%
D 38465 25474 352 352 0.92% 1.38%

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 15 174 770779 1264.66 3040 2977 607.1
A 15 239 160368 259.24 3040 2977 607.1
A 8 247 103036 164.81 3040 2977 607.1
B 0 229 173104 294.6 3047 2969 577.5
B 15 201 156144 265.23 3047 2969 577.5
B 4 216 92165 154.45 3047 2969 577.5
C 14 238 455712 667.99 2907 2924 677.8
C 7 247 418349 612.87 2907 2924 677.8
C 3 233 159824 231.47 2907 2924 677.8
D 2 33 905432 1261.57 2937 2847 715.4
D 7 38 518323 720.5 2937 2847 715.4
D 1 52 398296 552.73 2937 2847 715.4

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