ASTROSAT CZTI

Data Quality Report

Orbit 23776

Creation date: 2024-06-27T18:58:35.958960
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/AS1T03_180T01_9000003524_23776cztM0_level2.evt modeM0/AS1T03_180T01_9000003524_23776cztM0_level2_quad_clean.evt
Size (bytes)1,528,764,480266,149,440
Size1.4 GB 253.8 MB
Events in quadrant A10,028,2301,652,664
Events in quadrant B10,719,0821,692,331
Events in quadrant C10,267,7541,638,557
Events in quadrant D13,820,4781,586,050

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0439573
B0453013
C0441913
D0553683

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04400
B04400
C04400
D04400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A216572301.062012%
B216582721.255887%
C216583461.597562%
D216573251.500670%

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 23078 21659 0 0 0.00% 0.00%
B 23079 21660 13 13 0.06% 0.06%
C 23079 21660 0 0 0.00% 0.00%
D 23078 21659 90 90 0.39% 0.42%

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 38819 69.56 2596 2537 521.6
A 3 137 23153 39.52 2596 2537 521.6
A 0 226 22598 38.46 2596 2537 521.6
B 0 229 231815 466.5 2587 2523 491.5
B 0 189 124262 247.68 2587 2523 491.5
B 15 32 88269 174.45 2587 2523 491.5
C 14 238 396783 668.52 2512 2531 589.7
C 7 247 81103 133.23 2512 2531 589.7
C 13 61 17433 25.27 2512 2531 589.7
D 8 195 1937670 3148.68 2537 2461 614.6
D 7 238 1055022 1712.57 2537 2461 614.6
D 1 52 936937 1520.44 2537 2461 614.6

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