ASTROSAT CZTI

Data Quality Report

Orbit 32741

Creation date: 2024-06-27T20:41:28.518628
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/AS1A10_057T04_9000004728_32741cztM0_level2.evt modeM0/AS1A10_057T04_9000004728_32741cztM0_level2_quad_clean.evt
Size (bytes)484,871,04084,205,440
Size462.4 MB 80.3 MB
Events in quadrant A2,914,026557,158
Events in quadrant B4,604,065532,021
Events in quadrant C2,665,730562,093
Events in quadrant D4,133,677520,055

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121143
B0172232
C0113822
D0159772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5413731.348605%
B541373413.559948%
C5413390.720488%
D54132424.470719%

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 7355 5414 44 44 0.60% 0.81%
B 7354 5413 511 511 6.95% 9.44%
C 7355 5414 21 21 0.29% 0.39%
D 7355 5414 191 191 2.60% 3.53%

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 15 249 331377 2595.93 645 637 127.4
A 15 237 44279 342.54 645 637 127.4
A 12 16 15246 114.66 645 637 127.4
B 12 1 1229800 10727.06 620 608 114.6
B 15 36 640741 5586.39 620 608 114.6
B 0 197 60657 524.04 620 608 114.6
C 0 10 116366 802.14 629 635 144.3
C 8 79 43939 300.14 629 635 144.3
C 3 233 17616 117.7 629 635 144.3
D 8 195 419745 2881.04 608 596 145.5
D 2 250 352954 2421.95 608 596 145.5
D 2 249 321270 2204.17 608 596 145.5

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