ASTROSAT CZTI

Data Quality Report

Orbit 23924

Creation date: 2024-06-27T19:00:05.985710
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_23924cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23924cztM0_level2_quad_clean.evt
Size (bytes)1,673,043,840255,939,840
Size1.6 GB 244.1 MB
Events in quadrant A10,089,9521,624,081
Events in quadrant B10,544,3171,643,422
Events in quadrant C11,124,9491,554,842
Events in quadrant D17,514,2511,504,509

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0427933
B0438023
C0455973
D0667503

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04240
B04240
C04240
D04240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A206822101.015376%
B206832561.237731%
C206825282.552945%
D206828454.085678%

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 24327 20686 0 0 0.00% 0.00%
B 24328 20687 11 11 0.05% 0.05%
C 24327 20686 143 143 0.59% 0.69%
D 24327 20686 511 511 2.10% 2.47%

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 31426 55.45 2618 2563 520.5
A 3 137 22544 38.39 2618 2563 520.5
A 0 226 22383 38.08 2618 2563 520.5
B 0 189 255601 521.83 2586 2522 485.0
B 12 111 59090 116.64 2586 2522 485.0
B 11 111 52425 102.9 2586 2522 485.0
C 10 9 834950 1447.46 2483 2498 575.1
C 14 238 397162 686.24 2483 2498 575.1
C 7 247 131135 223.67 2483 2498 575.1
D 8 195 4800898 7929.83 2518 2449 605.1
D 1 52 2310819 3814.77 2518 2449 605.1
D 12 218 750299 1235.88 2518 2449 605.1

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